Once dubbed the "world's ugliest animal," the blobfish – scientific name Psychrolutes marcidus – has been named New Zealand's ...

Its transparent head allows it to look upward ... Living in depths between 2,297 and 9,006 feet, this deep-sea fish is mostly known for being able to swallow up 10 times its size in food.

To move, this species uses two fins—one pectoral and one dorsal—that are so thin they are almost transparent. As with sea horses, sea dragon males are responsible for childbearing. But instead ...

Scientists found a sandy sea creature with “transparent” tentacles off Spain and discovered a new species, a study said. Getty Images/iStockphoto Plunging into the water off the coast of Spain ...

Weedy sea dragons have very long, thin snouts; slender trunks covered in bony rings; and thin tails which, unlike their seahorse cousins, cannot be used for gripping. They have small, transparent ...