No.04 Seahorse

Seahorse is a generic name for fish in the family Seahorseidae, the spiny dogfish family.
They support themselves vertically by wrapping their tails around seaweed. Since they do not have a caudal fin, they swim by moving their small dorsal fins.
Males have a pouch for raising their young called a nursery sac, and can give birth to several hundred young at a time.

Although classified as a fish, it has no scales and most of its body is covered with armor-like bony plates.
Despite being covered with such a hard object, the tail is flexible and strongly coils around the algae.
Inside the body were long, thick vertebrae. Inside the mouth was a series of tube-like cavities, and no tooth-like structures were visible on CT images.
In the abdomen, as in other fishes, there was a large space that appeared to be a floating pouch. This space was polygonalized in the 3D model.