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Giant Pyrosome and Salps - pelagic sea squirts

Face-Off With a Deadly Predator by NationalGeographic: National Geographic photographer Paul Nicklen and his most amazing and surprising experience. #Leopard_Seal #Paul_Nicklen

Collection of Scrimshaw

Dolphins are apparently awful people.

The Dark Secrets That Dolphins Don't Want You to Know

The Narwhal: "a team of scientists from Harvard and the National Institute of Standards and Technology has now made a startling discovery: the tusk, it turns out, forms a sensory organ of exceptional size and sensitivity, making the living appendage one of the planet's most remarkable, and one that in some ways outdoes its own mythology. The find came when the team turned an electron microscope on the tusk's material and found new subtleties of dental anatomy. The close-ups showed that 10 million nerve endings tunnel from the tusk's core toward its outer surface, communicating with the outside world. The scientists say the nerves can detect subtle changes of temperature, pressure, particle gradients and probably much else, giving the animal unique insights. 'This whale is intent on understanding its environment,' said Martin T. Nweeia, the team's leader and a clinical instructor at the Harvard School of Dental Medicine. Contrary to common views, he said, 'The tusk is not about guys duking it out with sticks and swords.'"

The Amazon river dolphin (pink dolphin) is a freshwater river dolphin endemic to the Orinoco, Amazon and Araguaia/Tocantins River systems of Brazil, Bolivia, Peru, Ecuador, Colombia and Venezuela.

A single baleen whale, tracked since 1992, with a strangely high-pitched voice and unique migration pattern. Scientists think it is either a deformed hybrid of two different species or the last surviving member of an unknown species.

Chitons have hundreds of eyes on their backs, made of the same minerals as their shells. Though the vision these lenses provide is 1000 times courser than human vision, they are extremely resilient to abrasion and work equally well in air and underwater.

The Ping Pong Tree Sponge, Chondrocladia Lampadiglobus, lives more than 1 1/2 miles beneath the surface of the ocean and is carnivorous. Photo by Claire Nouvian. #Ping_Pong_Tree_Sponge #Chondrocladia_Lampadiglobus #Claire_Nouvian

Firefly Squid, Watasenia scintillans, is a small (approx 6 cm) luminescent dee-sea squid native to northern Japan. Hundreds of millions of female come inshore each spring to lay eggs in Toyama Bay, completing their 1-year life cycle. Each squid has approx 800 dermal light organs which flash blue light, clearly visible to the human eye. Some of the flashes have a rhythm resembling fireflies, thus the squid is known as the 'firefly squid' or 'hotaru-ika'. #Firefly_Squid #Japan #Marine_Biology #ScienceBlogs

Wunderpus Photogenicus, a spectacular octopus with a terrific name has long arms, small eyes on elongated stalks and a pattern which is unique to each individual. #Octopus #Wunderpus_Photgenicus

The Psychedelic Frogfish, Histiophryne psychedelica, so named for its colorful stripes—bumps and hops along the seabed by flexing its lower fins and shooting water from its gills. The fist sized creature was designated as new species in 2008 after being spotted off the coast of Indonesia. Here is a great video #Psychedelic_Frogfish #Marine_Biology

"Turritopsis nutricula". The mature medusa (or jellyfish) form of this hydrozoan can transform itself at the cellular level into the immature polyp form of itself. Theoretically, this process can continue indefinitely, effectively rendering the jellyfish biologically immortal.

Bowhead whales spend their entire lives in Arctic waters, using their massive bony skull to break through the ice to breathe. It may be the longest living mammal, sometimes living more than 200 years. They were once thought to live 60-70 years, however in May 2007 a specimen was caught in Alaskan waters with the head of an explosive harpoon embedded deep under its neck blubber. The harpoon was manufactured in New Bedford, Massachusetts around 1890, suggesting the animal may have survived a similar hunt more than a century ago and triggering research into its longevity.

The beautifiul bowhead whale, Balaena mysticetus is also known as the Greenland right whale and is a filter feeder. It is best known for its massive head which measures 1/3 of the body length. I wonder what it thinks about. Thanks to @Evan Sharp #Bowhead_Whale #Marine_Biology

Blue Lobster: "An estimated one in 2–5 million lobsters is blue. A genetic defect causes a blue lobster to produce an excessive amount of a particular protein which combines with a red carotenoid molecule, astaxanthin,... to form a blue complex known as crustacyanin, giving the lobster its blue color."

Shape-Shifting Cuttlefish Can Mimic Pictures: This cuttlefish raised two of its eight arms in apparent mimicry of the artificial algae in the tank. Photo by Justine Allen, Marine Biological Laboratory via National Geographic. #Cuttlefish #Mimicry #Justine_Allen #National_Geographic

Whale Shark: These gentle polka dotted giants (each with a unique pattern of dots) grow up to 45 feet in length, have been documented to dive to depths over 1 mile, are true sharks (cartilaginous) and yet are filter feeders having tiny teeth and feasting on plankton and fish eggs. #Whale_Shark #Smithsonianmag

The Sawfish, a ray, is an Elasmobranch and like its fellow group members (sharks, rays and skates) has a cartilaginous skeleton. It uses its saw (characterized by toothlike structures called denticles) for defense and for feeding by slashing its saw from side to side along the ocean floor, dislodging prey and likely by slashing through schools of fish, stunning or injuring them before consuming them via the ventral mouth. The largest species has been documented to weigh in at over 5,000lbs. Sawfish were revered by the Aztecs as "Earth Monsters". #Sawfish #Marine_Biology