Eels. Eels do not typically have pectoral fins (general area of animalia arms), nor do they have pelvic fins (the general animalia area of legs). Dorsal and anal fins are typically fused along the back around the tail and over the belly with the caudal fin a a ribbon-like structure.
Oysters, but very very rarely they are found in clams.
Some characteristics of sea animals include streamlined bodies for efficient swimming, gills for breathing underwater, and adaptations like fins or tentacles for locomotion. They often have a high tolerance for saltwater environments and may exhibit a wide range of shapes, sizes, and behaviors to survive in their marine habitats.
The fins act as stabilizer's. When the snake would make "S" movements in the water it was hard for it not to flip over at some point. So, it has developed fins on its back to works as a stabilizers which help to keep it right-side-up.
Monkey Says:I would think the animals that live in water. Ex: Fish.
Sea anemone are cnidarians.
I do not know of any mammal (mammals are the only animals to have hair) that has fins (fins are the preserve of fishes), but a sea-lion is an animal that is covered in hair and has "flippers".
Oysters, but very very rarely they are found in clams.
No
fish
By moving their fins
a fish
A reptile?
Turtles are water-dwelling reptiles, so they have webbed feet but they do not have fins like a fish or dolphin.
fins and dorsal fins, and back tail flipper thingy
The animal that has two pairs of fins is the bony fish, specifically those belonging to the class Actinopterygii. Most bony fish possess a pair of pectoral fins located on the sides of their bodies and a pair of pelvic fins located further back, both of which help with swimming and maneuverability. These fins are essential for balance and stability in the water.
Sea tutles do not have any fins. They do have 4 legs though.
Animals that use fins to move are whales, dolphins, sharks, and various types of fish. A fin will generate thrust and propel the animal through the water.