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"Biologists think that some species of sharks and whales may take advantage of defensive bioluminescence, though they are not bioluminescent themselves. A sperm whale, for instance, may seek out a habitat with large communities of bioluminescent plankton, which are not part of the whale's diet. As the plankton's predators approach the plankton, however, their glowing alerts the whale. The whale eats the fish. The plankton then turn out their lights." (NationalGeographic, 2014) (DailyMail…

The tasselled wobbegong (Eucrossorhinus dasypogon) is a species of carpet shark in the family Orectolobidae and the only member of its genus. It inhabits shallow coral reefs off northern Australia, New Guinea, and adjacent islands.

The goblin shark (Mitsukurina owstoni) is a deep-sea shark, the sole living species in the family Mitsukurinidae. It has a long, trowel-shaped, beak-like snout, much longer than other sharks' snouts. Some other distinguishing characteristics of the shark are the color of its body, which is mostly pink, and its long, protrusible jaws. When the jaws are retracted, the shark resembles a pink grey nurse shark, Carcharias taurus, with an unusually long nose.

The Telegraphfrom The Telegraph

Environment

Divers swim with great white sharks off the coast of Mexico - Telegraph

National Geographic (blogs)from National Geographic (blogs)

Two-Headed Blue Shark Surfaces (Another One!)

Two-headed Blue Shark found

Prehistoric shark found in Japan -The staff of a Japanese aquarium took pictures of a rare Frilled Shark after it was discovered by local residents near Tokyo. The eel-looking shark, with its mouth full of 300 trident-shaped teeth, measured 5.3 feet-long and weighed 16.5 pounds. Frilled sharks normally inhabit deep sea waters and rarely come to the surface.