FILE 001Ocean🌊2.5 centimeters per yearThe Mid-Atlantic Ridge spreads at about 2.5 centimeters per year — roughly the rate human fingernails grow.SrcUSGS — This Dynamic EarthPass the claimOpen file
FILE 002Ocean🌊Sharemore fish biomass than the rest of the ocean combinedThe ocean twilight zone (200–1,000 m) may hold more fish biomass than the rest of the ocean combined.SrcWoods Hole Oceanographic Institution
FILE 003Ocean🐳Share2,000 feet for ~45 minutesSperm whales routinely dive about 2,000 feet for ~45 minutes while hunting, then raft at the surface to recover.SrcNOAA Fisheries — Sperm Whale
FILE 004Ocean🌋Shareserpentinization chemistryAt the Lost City hydrothermal field, life is powered by serpentinization chemistry — hydrogen- and methane-rich fluids, not sunlight.SrcNOAA Ocean Explorer — Lost City 2005
FILE 005Ocean🐋Sharesleeping uprightSperm whales rest in stereotyped vertical drift-dives, floating nearly motionless just below the surface — possibly sleeping upright.SrcCurrent Biology (Miller et al., 2008)
FILE 006Ocean🐙Shareedit their own RNAOctopuses can edit their own RNA in response to temperature — massively recoding neural proteins as the water warms or cools.SrcCell (Birk et al., 2023)
FILE 007Ocean🦑Share2,240 suckersA female giant Pacific octopus carries about 2,240 suckers; each sucker holds roughly 10,000 chemoreceptor cells.SrcMonterey Bay Aquarium
FILE 008Ocean🐙Sharejust larger than its beakAn octopus's only hard part is its beak — so it can squeeze through any opening just larger than its beak.SrcSmithsonian's National Zoo
FILE 009Ocean💡Share76% of midwater animalsIn MBARI surveys, about 76% of midwater animals observed could make their own light (45% of seafloor animals).SrcMBARI — Bioluminescence
FILE 010Ocean🌊Share26.1% of the seabedAs of the GEBCO_2024 release, only about 26.1% of the seabed has been mapped to modern standards.SrcGEBCO
FILE 011Ocean🐢Sharebicoordinate magnetic mapLoggerhead sea turtles navigate with a bicoordinate magnetic map — reading both latitude and longitude from Earth’s field.SrcCurrent Biology (Lohmann et al., 2011)
FILE 012Ocean🦑Share25–30 cm acrossA colossal squid eye measured about 25–30 cm across — among the largest eyes in the animal kingdom.SrcMuseum of New Zealand Te Papa
FILE 013Ocean🐠Shareless than 1%Coral reefs cover less than 1% of the ocean floor yet support about 25% of marine species.SrcNOAA Fisheries — Corals
FILE 014Ocean🦐Sharecavitation bubblesPeacock mantis shrimp strikes hit with hundreds of newtons and create cavitation bubbles whose collapse delivers a second shock.SrcJournal of Experimental Biology (Patek et al.)
FILE 015Ocean🦈Share392 ± 120 yearsThe largest Greenland shark sampled was estimated at 392 ± 120 years old — a lifespan spanning centuries.SrcScience (Nielsen et al., 2016)
FILE 016Ocean🐙Sharethree heartsAn octopus has three hearts and blue blood — two hearts pump through the gills; copper-based hemocyanin turns the blood blue when oxygenated.SrcSmithsonian Ocean
FILE 017Ocean🌊Sharemore than a mile of waterIf you set Mount Everest on the floor of the Mariana Trench's Challenger Deep, its peak would still sit under more than a mile of water.SrcNOAA NCEI — Mariana Trench
FILE 018Ocean🐠Share800 pounds of sand per yearParrotfish produce up to 800 pounds of sand per year by eating coral and excreting the calcium carbonate. Much of the white sand on tropical beaches is parrotfish poop.SrcNational Geographic Kids
FILE 019Ocean🌊Share20 million tons of goldThe ocean contains an estimated 20 million tons of gold dissolved in seawater — worth roughly $770 trillion at current prices. However, it's so diluted (about 13 billionths of a gram per liter) that extracting it is completely impractical.SrcNOAA
FILE 020Ocean🦈Share40 feet longWhale sharks are the largest fish alive at up to 40 feet long, but they eat only tiny plankton.SrcNational Geographic
FILE 021Ocean🦈ShareSharksSharks have been on Earth for over <hl>450 million years</hl> — they predate trees, which appeared roughly 385 million years ago. Sharks survived all five mass extinctions, including the one that killed the dinosaurs.SrcSmithsonian NMNH
FILE 022Ocean🌊Shareover 500 mphIn the deep ocean, tsunamis can move over 500 mph — as fast as a jet — while the wave height at sea is often only a few feet.SrcNOAA JetStream — Tsunami Propagation
FILE 023Ocean🐋Shareblue whale's heartThe blue whale's heart is the size of a <hl>golf cart</hl> — about 5 feet long and weighing 400 pounds. Its heartbeat is so powerful it can be detected from 2 miles away, and its aorta is wide enough for a human to crawl through.SrcNOAA
FILE 024Ocean🧊ShareAntarctic Circumpolar CurrentThe Antarctic Circumpolar Current is the largest ocean current on Earth, carrying <hl>150 times the flow of all the world's rivers combined</hl> in a continuous loop around Antarctica. It keeps Antarctica isolated and frozen.SrcBritish Antarctic Survey
FILE 025Ocean🌋Share90% of all volcanic activity90% of all volcanic activity on Earth occurs underwater along mid-ocean ridges. The <hl>Mid-Atlantic Ridge</hl> alone stretches 10,000 miles — the longest mountain range on Earth — and is slowly pushing the Americas away from Europe and Africa.SrcUSGS
FILE 026Ocean🌊Share750°FDeep-sea hydrothermal vents support life at temperatures up to 750°F — using chemicals instead of sunlight for energy.SrcNOAA