The ocean is not what you think.
Twenty-five years of reef keeping, dive trips and travels across 80+ countries — written by one marine biologist who has actually been in the water.
The stories drawing the most readers to TheSea.Org right now — updated from real visits.
Red-Lipped Batfish — Galapagos Fish That Walks on Fins and Wears Red Lipstick
The red-lipped batfish is a 20 cm Galapagos anglerfish that walks on its fins and uses a chemical lure. Why the red lips, what it eats, where to see it.
Bizarre Sea Creatures
Lifespan of a Giant Squid — Why a 13-Metre Animal Lives Only Five Years
TheSea.Org▸Marine Life▸Squid▸Lifespan of a Giant Squid Lifespan of a Giant Squid — Why a 13-Metre Animal Lives Only Five Years Squid Q&A By Blane Perun 9…
Squid Q&A
Are Dolphins Evil? The Dark Side of Dolphins, Explained
Are dolphins evil? No, but they kill porpoises, commit infanticide and coerce mates. The evidence from Scotland, Shark Bay and Florida, with sources.
Dolphins Q&A
Octopus Adaptations — How an Invertebrate Out-Engineered the Reef
TheSea.Org▸Marine Life▸Octopus▸Octopus Adaptations Octopus Adaptations — How an Invertebrate Out-Engineered the Reef Octopus Q&A By Blane Perun 9 min read What are the main adaptations of…
Octopus Q&A
Almost every article you will find online about the ocean was written by someone who has never been in it. This site is what happens when a marine biologist with twenty-five years in the water writes without a content calendar telling him what’s trending — the actual anatomy, the actual intelligence, the actual reputation.
The newest reports on TheSea.Org — this block updates the moment a new story goes live.
Jupiter Inlet Lighthouse — Meade’s 1860 Tower, Station J and the Climb
Jupiter Inlet Lighthouse: George Meade's 1860 tower, the Civil War sabotage, the 1928 hurricane, WWII Station J, and climbing it today, with hours and prices.
Key West Lighthouse — Barbara Mabrity, 88 Steps and Visiting the Museum
Key West Lighthouse and Keeper's Quarters: the 1846 hurricane, keeper Barbara Mabrity, the 1848 tower raised in 1894, 88 steps to climb, hours and prices.
Ponce de Leon Inlet Lighthouse — Florida’s Tallest, Its History and Climb
Ponce de Leon Inlet Lighthouse, Florida's tallest at about 175 feet: the lost 1835 tower, Stephen Crane's shipwreck, 203 steps, hours and admission.
Pages search engines are starting to reward — the ones on the edge of page one.
Conger Eel (Congridae) — Size, Habitat, Diet & Life Cycle
Conger eels grow to 3 m and 110 kg, hide in wrecks and reef caves by day and spawn only once before dying. Size, range, diet, record catches and how to ID one.
Megalodon vs Blue Whale — Is Megalodon Bigger? Size Comparison
Is megalodon bigger than a blue whale? No. Blue whales reach 33.6 m and 190 t; megalodon 15-18 m typical, 24 m max. Scale chart, weight, bite, teeth compared.
What Do Barnacles Do for Whales? Hitchhikers, Not Helpers
Whale barnacles get a free ride and food; the whale gets little in return beyond possible armour for fights. Which whales carry them, how much and do they hurt.
A rotating pick from across 2,700 reports — refresh the page for a new set.
Narwhal — Monodon monoceros
TheSea.Org▸Whales▸Narwhal Narwhal — Monodon monoceros Whales By Blane Perun April 15, 2026 10 min read What is a Narwhal? The narwhal (Monodon monoceros) is an Arctic…
Is the Red Sea Safe to Swim? Sharks, Stonefish, Currents and Sun
Yes, the Red Sea is generally safe to swim at resorts like Sharm and Hurghada. The real risks are stonefish, urchins, fire coral, currents, sun and rare sharks.
American Crocodile — Florida’s Comeback Croc (Size, Range, Diet & Facts)
The American crocodile lives from South Florida to Peru, grows to 4-5 m and is far shyer than its reputation. Size, range, diet, nesting, status and safety.
Are Blanket Octopus Dangerous — The Risk Assessment for Divers, Researchers, and Curious Beachgoers
TheSea.Org▸Marine Life▸Octopus▸Blanket Octopus▸Are Blanket Octopus Dangerous Are Blanket Octopus Dangerous — The Risk Assessment for Divers, Researchers, and Curious Beachgoers Blanket Octopus Q&ABy Blane Perun7 min…
Are There Jellyfish in Hawaii? Box Jellyfish Days and Man-of-War Beaches
Yes. Box jellyfish reach Oahu's south shore 8 to 10 days after each full moon, and man-of-war hit windward beaches in strong winds. When, where, what to do.
Charles Vane — The Pirate Who Refused a Royal Pardon
TheSea.Org▸Pirates▸Charles Vane Charles Vane — The Pirate Who Refused a Royal Pardon Pirates By Blane Perun April 15, 2026 9 min read Who was Charles Vane?…
Bonaire Shore Diving Guide — Marine Park, Hilma Hooker and Klein Bonaire
Bonaire shore diving guide: 85 marked sites in a marine park protected since 1979, the 72-m Hilma Hooker wreck, Klein Bonaire, the nature tag and conditions.
Parts of a Squid — A Head-to-Tail Field Guide to Cephalopod Anatomy
TheSea.Org▸Marine Life▸Squid▸Parts of a Squid Parts of a Squid — A Head-to-Tail Field Guide Squid Q&A By Blane Perun 8 min read What are the main…
Bigfin Reef Squid — Sepioteuthis lessoniana, the Iridescent Shallow-Water Squid of the Indo-Pacific
TheSea.Org▸Squid▸Bigfin Reef Squid Bigfin Reef Squid — Sepioteuthis lessoniana, the Iridescent Shallow-Water Squid of the Indo-Pacific SquidBy Blane Perun9 min read What is a bigfin reef…
Key West Scuba Diving Gallery — Summer Wrecks, Joe’s Tug and the Vandenberg
Notes behind my August 2016 Key West dive gallery: the true story of Joe’s Tug, the Vandenberg, summer diving conditions and how to photograph wrecks.
What Is the Smartest Animal in the Ocean? Dolphins, Orcas and Octopus
The smartest animal in the ocean is usually the bottlenose dolphin, ahead of orcas. The evidence for whales, octopus, cuttlefish, clever fish and sea lions.
Toadstool Leather Coral — Care, Shedding and Fragging Guide
Toadstool leather coral (Sarcophyton) care: light, flow, why it sheds and stays closed, chemical warfare with stony corals, and how to frag it cleanly.
Majano Anemone — Identification, Removal, and Reef Tank Impact
Majano anemones (Anemonia manjano) are fast-spreading pest anemones in reef tanks. How to identify them, why they spread, and how to remove them for good.
Do Annelids Have a Coelom? Yes, a True Segmented Coelom
Yes. Annelids have a true coelom, a fluid-filled cavity lined with mesoderm and divided by septa into segments. How it works as a skeleton and why it matters.
Emanuel Wynn — The Pirate Who Invented the Jolly Roger
TheSea.Org▸Pirates▸Emanuel Wynn Emanuel Wynn — The Pirate Who Flew the First Skull and Crossbones Pirates By Blane Perun 6 min read Who was Emanuel Wynn? Emanuel…
Sea Dragons — Leafy, Weedy and Ruby Seadragons of Southern Australia
Sea dragons are three species of seahorse relatives found only in southern Australia: leafy, weedy and ruby. Camouflage, male brooding, range and threats.
Flower Hat Jellyfish (Olindias formosus) — Facts, Range & Sting
The flower hat jelly (Olindias formosus) is a 15 cm hydromedusa of Japan and Korea with glowing tentacle tips that lure fish. Range, sting, life cycle.
Bull Shark Testosterone Levels
TheSea.Org▸Sharks▸Bull Shark▸Testosterone levels Bull Shark Testosterone Levels — The Highest Documented in Any Shark, and What That Actually Means Sharks ▸ Bull Shark Q&A By Blane…
More of what readers keep coming back for.
Bobbit Worm — Ambush Predator Buried in Reef Sediment That Can Bisect Fish
TheSea.Org▸ Bizarre Sea Creatures▸ Bobbit Worm Bobbit Worm — Eunice aphroditois Bizarre Sea Creatures By Blane Perun April 15, 2026 9 min read What is a…
Giant Squid — Architeuthis dux, the Deep-Sea Legend Photographed in 2004
TheSea.Org▸Squid▸Giant Squid Giant Squid — Architeuthis dux, the Deep-Sea Legend Photographed in 2004 SquidBy Blane Perun11 min read What is a giant squid? The giant squid…
Recently added reports from across the site.
Sanibel Lighthouse — History, Hurricane Ian and Lighthouse Beach
The Sanibel Lighthouse at Point Ybel: lit in 1884, a "Sanibel class" iron tower, damaged by Hurricane Ian in 2022, relit in 2023 and given a new leg in 2024.
St. Augustine Lighthouse — History, 219 Steps and Visiting Tips
St. Augustine Lighthouse: Spanish watchtowers, Florida's first US light in 1824, the 165-foot 1874 tower and its original lens, 219 steps and current hours.
Cape Florida Lighthouse — Key Biscayne’s 1825 Tower and Its History
Cape Florida Lighthouse on Key Biscayne: built 1825, burned in the 1836 Seminole siege, raised to 95 feet in 1855, relit in 1996. History, fees and tours.
More pages gaining ground in search.
Do Seals Eat Penguins? Which Seals Do, and How They Hunt
Which seals eat penguins? Leopard seals take 1–5% of Adélie colonies a season; fur seals, NZ and South American sea lions kill penguins locally. Studies, numbers, how they hunt.
Seals Q&A
Are Sharks Mammals? No, and Not Marine Mammals Either
No. Sharks are cartilaginous fish, not mammals or marine mammals: they breathe with gills and never nurse their young. How to tell a shark from a dolphin.
Sharks Q&A
Are Dolphins Evil? The Dark Side of Dolphins, Explained
Are dolphins evil? No, but they kill porpoises, commit infanticide and coerce mates. The evidence from Scotland, Shark Bay and Florida, with sources.
Dolphins Q&A
Ocean Decomposers — The Unsung Recyclers of the Sea
Ocean decomposers are bacteria, fungi and detritivores that break down dead matter and recycle nutrients. Examples from marine snow microbes to bone worms.
Oceans Q&A
Can Alligators Breed With Crocodiles? Why There Are No Hybrids
No. Alligators and crocodiles can't breed: separate families split 80+ million years ago, with different chromosomes. Which crocodiles do hybridise, and why.
Croc Q&A
Freshly built sections — each a full guide with its own hub.
Shark Species A–Z — Types of Sharks, All 9 Orders Explained
Types of sharks explained by a diver: all 9 shark orders, 540+ species, and an A–Z index of shark species profiles from angel shark to zebra shark.
Sharks
Sport & Game Fish of Florida and the Gulf — The Complete Field Guide
Florida and Gulf game fish explained: tarpon, snook, redfish, goliath grouper, marlin, mahi, tuna and more, with sizes, world records, ranges and seasons.
Sport & Game Fish
Prehistoric Sea Creatures — 500 Million Years of Ocean Giants
Prehistoric sea creatures from the Cambrian to megalodon: who ruled when, the largest giants, how fossils form and are dated, plus 26 profiles and survivors.
Prehistoric Sea Creatures
Seashells — How They Form, What Lives Inside, and Where to Find Them
Seashells are mineral skeletons built by living mollusks. Learn how shells form, why they spiral, what lived inside, and where Florida's best shelling is.
Seashells & Shelling
Rays, Skates & Sawfish — A Field Guide to the Flat Sharks
Field guide to rays, skates and sawfish: stingrays, eagle rays, skates, guitarfish, electric rays and sawfish, with sizes, stings, IUCN status and Florida tips.
Rays
Bioluminescence — How and Why the Ocean Glows
Bioluminescence is living light from a luciferin-luciferase reaction. How it works, why ocean light is blue, how scientists study it and where to see it.
Bioluminescence & Plankton
Field observations — written down at the surface, between dives, before they could be polished into something less true.
Another rotating set from the archive.
Do Octopus Have Teeth? The Radula, the Beak, and What’s Really Inside the Mouth
TheSea.Org▸Marine Life▸Octopus▸Do Octopus Have Teeth Do Octopus Have Teeth? — Yes — but Not Where You'd Expect Them Octopus Q&A By Blane Perun 7 min read…
Global Warming & Coral Bleaching — Why a Warmer Sea Whitens Reefs
How global warming causes coral bleaching: ocean heat, marine heatwaves and El Nino push corals past their limit, plus bleaching history and IPCC projections.
Do Sharks Lay Eggs? — The Complete Answer
TheSea.Org▸Sharks▸Do they lay eggs Do Sharks Lay Eggs — Some Do (~40%), Most Don’t (Live Birth in 60%) Sharks ▸ General Q&A By Blane Perun 9…
Sharks by Region — Where Sharks Live, From Cape Cod to Hawaii
Sharks by region: Florida, the Gulf, Cape Cod, California, Hawaii and Australia, plus the bull shark myths of the Great Lakes, the Mississippi and the Midwest.
LPS Reef Aquarium — Planning, Stocking and Spacing a Large-Polyp Stony Coral Tank
How to plan an LPS reef aquarium: the best large-polyp corals for beginners, light and flow targets, spacing for sweeper tentacles, feeding and water chemistry.
Snorkeling — What It Is, How It Works and Where to Start
Snorkeling explained by a diver: what it is, how a snorkel works and why tubes are short, safety and reef etiquette, plus every snorkeling guide on TheSea.Org.
Invertebrates Change as They Grow — Metamorphosis
How invertebrates change as they grow: metamorphosis from drifting larva to settled adult in corals, crabs, sea stars and snails, and why it matters for reefs.
USS Arizona — The Pearl Harbor Wreck That Still Leaks Oil
USS Arizona exploded at Pearl Harbor on 7 December 1941, killing 1,177 men. Why one bomb sank her, who is still aboard, and why the wreck still leaks oil.
Lion’s Mane Jellyfish — The Largest Jellyfish, Size Record & Sting
Lion's mane jellyfish: the 1870 record (2.28 m bell, 36.6 m tentacles) and its caveats, how it hunts moon jellies, hidden species and NHS sting first aid.
Whale Watching in Boston and Stellwagen Bank
Boston whale watches head to Stellwagen Bank, 25 miles offshore. Why humpbacks, fin and minke whales feed there, the mid-spring to October season and the rules.
Raceway Aquaculture — How Flow-Through Fish Farming Works
Raceway aquaculture explained: concrete flow-through channels where constant water flow lets trout, catfish and salmon smolts grow densely. Design, pros, cons.
Andaman Sea
TheSea.Org▸Oceans & Seas▸Andaman Sea Andaman Sea Oceans & Seas By Blane Perun April 15, 2026 10 min read What is the Andaman Sea? The Andaman Sea…
Skimmers — The Only Birds With a Longer Lower Bill
Skimmers are tern relatives with a lower bill longer than the upper and cat-like pupils. How black skimmers fish by touch at night and why they nest on beaches.
Vanuatu Coral Reef Maps
Vanuatu coral reef maps: fringing reefs of Santo, Efate, Malekula, Epi and Tanna, the SS President Coolidge wreck, reef life, tabu reefs and reef threats.
Giant Pacific Octopus Venom — The Salivary Toxins That Subdue Crabs but Don’t Kill Humans
TheSea.Org▸Marine Life▸Octopus▸Giant Pacific Octopus▸Giant Pacific Octopus Venom Giant Pacific Octopus Venom — The Salivary Toxins That Subdue Crabs but Don't Kill Humans Giant Pacific Octopus Q&ABy…
Luxor Sits on the Nile, but the City Is Built from Eocene Seafloor — and the Closest Reefs Are 200 km East
TheSea.Org▸Travels▸Africa▸Luxor Luxor Sits on the Nile, but the City Is Built from Eocene Seafloor — and the Closest Reefs Are 200 km East Africa ▸ Egypt…
Trumpetfish (Aulostomus maculatus) — The Reef’s Vertical Ambush Hunter
The West Atlantic trumpetfish grows to 1 m, hangs head-down among sea rods and shadows parrotfish to ambush prey with a vacuum-like strike. ID, range, diet.
How Old Are Nautilus? Lifespan and a 500-Million-Year Lineage
Nautiluses live 20 years or more and mature at about 10 to 17, ancient for a cephalopod. Their nautiloid lineage goes back about 500 million years.
A fresh random pick on every visit.
Rays, Skates & Sawfish — A Field Guide to the Flat Sharks
Field guide to rays, skates and sawfish: stingrays, eagle rays, skates, guitarfish, electric rays and sawfish, with sizes, stings, IUCN status and Florida tips.
Tube Sponges — The Organ Pipes of the Caribbean Reef
Tube sponges rise from reefs in clusters of yellow, purple and lavender pipes up to 1.5 m tall. The main Caribbean types, how they feed and how to spot them.
Alligator Bite Force vs Crocodile Bite Force — The Measured Numbers
A 12.5 ft alligator bit with 2,125 lbf, and a saltwater crocodile with 3,700 lbf, the strongest bites ever measured. How Florida scientists measured them.
Common Octopus Size — Length, Arm Span and Weight
How big is a common octopus? Mantle up to about 25 cm, total length usually 0.6 to 1.3 m and weight mostly 1 to 3 kg, with a record near 10 kg. Size compared.
Jacques Piccard — The First Man to Reach the Bottom of the Mariana Trench
Jacques Piccard and Don Walsh reached the Challenger Deep in the bathyscaphe Trieste on January 23, 1960. His life, the dive, the Ben Franklin drift and legacy.
How Long Can a Sea Snake Hold Its Breath? Up to Hours
Most sea snake dives last under an hour; resting snakes can stay down 2+ hours, with records near 3.6 hours. How temperature, lungs and skin set the limit.
Bioluminescent Kayaking — What to Expect, When to Go, What to Bring
Bioluminescent kayaking tours paddle glowing water on dark nights. Moon timing, Florida and Puerto Rico seasons, what to bring, and rules that protect the glow.
What Do Great White Sharks Weigh
TheSea.Org▸Sharks▸Great White Shark▸Weight Great White Shark Weight — Up to 2,300 kg and the Cube Relationship That Explains It Sharks ▸ Great White Q&A By Blane…
How Big Are Sea Otters? Length, Weight & Size Comparison
Adult male sea otters are 1.2-1.5 m long and usually weigh 22-45 kg (rarely ~54 kg); females are smaller. Size by subspecies, pups and other otters.
Steller Sea Lion (Eumetopias jubatus) — Size, Range & Status
The Steller sea lion is the largest sea lion: males reach 3.3 m and 1,100 kg. Range, diet, lifespan and why the western population is still endangered.
Qatar Coral Reef Maps
Qatar coral reef map: offshore patch reefs in the Persian Gulf, Halul Island and the north-east coast, plus heat-tolerant corals, wildlife and threats.
Roatan — The Southern Terminus of the Mesoamerican Reef, Where the British Marooned 2,500 Garifuna in 1797 and Founded the Bay Islands’ First Permanent Post-Columbian Settlement
TheSea.Org▸Travels▸Central America▸Roatan Roatan — The Southern Terminus of the Mesoamerican Reef, Where the British Marooned 2,500 Garifuna in 1797 and Founded the Bay Islands’ First Permanent…
Local Threats to Coral Reefs — Pollution, Overfishing & Runoff
Local threats to coral reefs: overfishing, blast and cyanide fishing, sewage and fertiliser pollution, sediment runoff and coastal development, and how to fix them.
Yellow Goniopora — Yellow Flowerpot Coral Color, Light and Care
Yellow Goniopora is a flowerpot color form. Where the yellow comes from (algal pigments, green and red fluorescent proteins), how it shifts, and how to track it.
Peg Leg Pirate
TheSea.Org▸Pirates▸Pirate World The Peg Leg Pirate: History, Prosthetics, and Legend Pirates By Blane Perun 7 min read The short answer Leg amputations were genuinely common among…
Where Do Bobbit Worms Live? Burrows in Warm Seafloors
Bobbit worms live buried in sand, gravel and coral rubble on warm Indo-Pacific and Atlantic seafloors, ready to ambush fish. Habitat, size and where to look.
How Can We Conserve the Oceans? Treaties, Protected Areas and Everyday Action
Ocean conservation works through protected areas, sustainable fishing, less plastic and carbon, and the new High Seas Treaty. What works and how to help.
Muscat — Oman’s Capital on a 90-Million-Year-Old Slice of Ocean Floor
TheSea.Org▸Travels▸Middle East▸Muscat Muscat — Oman’s Capital on a 90-Million-Year-Old Slice of Ocean Floor Middle East ▸ Oman By Blane Perun Visited 2018 9 min read More…
More fresh additions to the site.
Florida Lighthouses — History, Heights and Which Ones You Can Climb
Florida's historic lighthouses: St. Augustine, Ponce Inlet, Cape Florida, Jupiter Inlet, Key West and Sanibel, with dates, heights, steps and visiting notes.
Squid Fishing — Jigs, Lights and the World’s Squid Fleets
How squid fishing works: night lights, jigs, purse seines and trawls, the global catch of over 3 million tonnes, US squid fisheries, and the rules for anglers.
Strawberry Squid — The Cock-Eyed Squid With One Big Yellow Eye
The strawberry squid is a red, light-spotted deep-sea squid with one big upward eye and one small downward eye. How its odd eyes work and where it lives.
Long-form guides, complete and cited
Each piece is a full field guide — taxonomy, behavior, habitat, and conservation status — not a listicle. Six of the most-read are below, plus octopus adaptations, giant squid lifespan, and adaptations of a dumbo octopus for further reading.
Bobbit Worm — Ambush Predator Buried in Reef Sediment That Can Bisect Fish
TheSea.Org▸ Bizarre Sea Creatures▸ Bobbit Worm Bobbit Worm — Eunice aphroditois Bizarre Sea Creatures By Blane Perun April 15, 2026 9 min read What is a…
Bizarre Sea Creatures
Giant Squid — Architeuthis dux, the Deep-Sea Legend Photographed in 2004
TheSea.Org▸Squid▸Giant Squid Giant Squid — Architeuthis dux, the Deep-Sea Legend Photographed in 2004 SquidBy Blane Perun11 min read What is a giant squid? The giant squid…
Squid
Gulper Eel — The Deep-Sea Fish With a Mouth Bigger Than Its Body
The gulper eel (Eurypharynx pelecanoides) hunts at 500-3,000 m with a mouth a quarter of its length. How it feeds, its glowing tail, size and life cycle.
Bizarre Sea Creatures
Parts of a Squid — A Head-to-Tail Field Guide to Cephalopod Anatomy
TheSea.Org▸Marine Life▸Squid▸Parts of a Squid Parts of a Squid — A Head-to-Tail Field Guide Squid Q&A By Blane Perun 8 min read What are the main…
Squid Q&A
Sea Pig — Abyssal Sea Cucumber That Herds in Thousands on the Ocean Floor
Sea pigs (Scotoplanes) are deep-sea sea cucumbers that walk on hydraulic legs at 1,200-5,000 m. How they feed, find whale falls, and shelter baby crabs.
Bizarre Sea Creatures
Deep Sea Anglerfish — Bioluminescent Lure & Parasitic Males Fused for Life
Deep sea anglerfish: about 160 species with glowing bacterial lures, 6 mm males that fuse to females, what they eat, how deep they live and how they were filmed.
Bizarre Sea Creatures
Close to page one — give them a read.
Parts of a Pirate Ship — Labeled Diagram and Glossary
Parts of a pirate ship explained with a labeled diagram: bow, stern, bowsprit, quarterdeck, masts, sails, rigging, gun ports, hold, plus a 33-term glossary.
Pirate Ship Names — Real Pirate Ships, Their Captains and Fates
Real pirate ship names with captains, years and fates: Queen Anne's Revenge, Whydah Gally, Royal Fortune, Adventure Galley, Fancy and more, plus naming habits.
Rounding out the most-visited stories.
Was Blackbeard Real
TheSea.Org▸Pirates▸Blackbeard Was Blackbeard Real — The Man Behind the Myth Pirates By Blane Perun 7 min read The short answer Yes. Edward Teach — Blackbeard —…
Pirates Blackbeard
Dumbo Octopus — The Deepest-Living Octopus, Found at Nearly 7,000 Metres
TheSea.Org▸ Bizarre Sea Creatures▸ Dumbo Octopus Dumbo Octopus — Grimpoteuthis Bizarre Sea Creatures By Blane Perun April 19, 2026 9 min read What is a Dumbo…
Bizarre Sea Creatures
Giant Pacific Octopus Size — How Big the World’s Largest Octopus Species Actually Gets
TheSea.Org▸Marine Life▸Octopus▸Giant Pacific Octopus▸Giant Pacific Octopus Size Giant Pacific Octopus Size — How Big the World's Largest Octopus Species Actually Gets Giant Pacific Octopus Q&ABy Blane…
Octopus Pacific Q&A
Squid Eggs — Gelatinous Masses of a Thousand Tiny Embryos
TheSea.Org▸Marine Life▸Squid▸Squid Eggs Squid Eggs — Gelatinous Masses of a Thousand Tiny Embryos Squid Q&A By Blane Perun 9 min read What are squid eggs? Squid…
Squid Q&A
Megalodon vs Blue Whale — Is Megalodon Bigger? Size Comparison
Is megalodon bigger than a blue whale? No. Blue whales reach 33.6 m and 190 t; megalodon 15-18 m typical, 24 m max. Scale chart, weight, bite, teeth compared.
Whales Q&A
Three sources dominate ocean content online. Here is how this one is built differently.
Eighty countries of fieldwork — not all of it underwater. The places that frame the dives, in their own right.
The Valley of the Kings
Tombs cut for the New Kingdom pharaohs. Tutankhamun, Ramesses II, Seti I — the entire roster of Egypt’s golden age, sealed into one limestone valley.
Petra — the Rose City
Carved into Jordan’s red sandstone by the Nabataeans. Two thousand years later, it still feels like a place that should not exist.
Jaffa — the oldest port
One of the oldest continuously occupied ports on Earth. The harbour where the cedars of Lebanon entered Solomon’s temple.
The Dead Sea — ten times saltier
The lowest land surface on the planet. A place where the laws of swimming temporarily suspend themselves.
The reefs I have come back to most often. From the Andaman to the Caribbean, with notes on how reef bleaching reaches the surface and what actually slows it.
The Andaman Sea — the Bay of Bengal’s hidden reef province
Off the western coast of Thailand and the Andaman archipelago, a stretch of reef as biologically rich as anything in the Coral Triangle — with monsoon-driven visibility windows that make it accessible to divers only six months out of the year.
Field notes from Phuket, the Similan Islands, Richelieu Rock, and the Burma Banks — including the long-distance return migrations of whale sharks, the mass spawning aggregations of Pacific cephalopods on the rim, and the role of sea turtle habitat in shaping the seagrass meadows beyond the reef edge.
Read the full report →The most recent reports, updated automatically.
What Do Squid Eat? Fish, Crustaceans, Other Squid and Plankton
Squid eat fish, shrimp, crabs and other squid, and hatchlings start on copepods. How squid hunt, how much they eat, and what each well-known species feeds on.
The Kraken — The Legend, Its Origins and the Real Giant Squid
Where the kraken legend came from: Norwegian fishermen, Egede and Pontoppidan, a ship-sinking octopus engraving, and the giant squid that made the monster real.
How Long Do Seahorses Live? Lifespan in the Wild and in Aquariums
Most seahorses live about 1 to 5 years: around a year for the smallest species, 3 to 5 for larger ones. What tagging studies show, and how seadragons compare.
Blane Perun
Marine biologist, underwater photographer, and founder of TheSea.Org — online since 1999. Reef keeper and coral grower since 1996, traveler across more than 80 countries, and a diver from the Caribbean to the Red Sea and the South Pacific, with a particular focus on coral reef systems.
