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This Tritonia tetraquetra is a relatively large sea slug or nudibranch that can grow to 215 mm (8.5 inches) in length. T...
09/07/2025

This Tritonia tetraquetra is a relatively large sea slug or nudibranch that can grow to 215 mm (8.5 inches) in length. The two horn-like structures on Tritonia’s head are rhinophores that allow the sea slug to “smell” chemical signals dissolved in seawater and help find its prey: deep-sea corals. It crawls onto corals and eats the soft polyps using its rasp-like tongue, called a radula. Two rows of white fluffy gills line the back of this pink nudibranch. This predator gets its pink color from the color of its pink prey.

Goblin shark _ Its appearance is what really sets it apart—it looks like something straight out of a science fiction mov...
06/07/2025

Goblin shark _ Its appearance is what really sets it apart—it looks like something straight out of a science fiction movie

The most distinctive feature of the goblin shark is its long, flattened snout, which protrudes far beyond its mouth. This snout is covered in sensory organs that help the shark detect the electrical fields produced by its prey, which is crucial for hunting in the deep, dark waters where it lives. The snout, combined with the shark’s pale pinkish-gray color, gives it a ghostly, almost eerie appearance, which is why it has been nicknamed the “goblin” shark.

Another fascinating characteristic of the goblin shark is its jaws. Unlike most sharks, which have jaws that are firmly attached to their skulls, the goblin shark has highly protrusible jaws. This means that when it attacks its prey, its jaws can shoot forward, extending out of its mouth to grab its target. This ability is incredibly useful for catching fast-moving prey in the deep sea, where food can be scarce, and every meal counts. When not in use, the jaws are retracted under the snout, making the shark look a bit more streamlined.

The body of the goblin shark is soft and flabby, which is unusual for sharks. This is because it lives in deep water, usually between 200 and 1,200 meters (660 to 3,900 feet) below the surface, where the pressure is high and the environment is cold and dark. The soft body helps the shark conserve energy in this challenging environment. Its fins are also relatively small, which means the goblin shark is not a fast swimmer. Instead, it likely relies on ambush tactics to capture prey, slowly drifting through the water until it gets close enough to launch a sudden attack.

The unusual Bathydevius is the first known bathypelagic nudibranchBathydevius caudactylus. Newly discovered in 2002, swi...
06/07/2025

The unusual Bathydevius is the first known bathypelagic nudibranch

Bathydevius caudactylus. Newly discovered in 2002, swimming on the flank of Davidson Seamount at 1498 meters water depth. Location: California, Davidson Seamount

Finally captured an adult   breach from above!!
05/07/2025

Finally captured an adult breach from above!!

These two bottlenose dolphins were riding the humpback’s wake then swimming to its eye and pausing. It was like a reunio...
04/07/2025

These two bottlenose dolphins were riding the humpback’s wake then swimming to its eye and pausing. It was like a reunion of old friends in a fleeting moment.

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