its called a ceticeti
The only name I can find for the sea serpent is 'Κῆτος' (Cetus), which simply means a whale, large fish, or sea monster. (CHANGED) also called Ceti
In mythology, such a creature was called a 'Mermaid'.
It's called the hippocampus. It was the noble steed of Poseidon and his sons.
It was called Cetus Aethiopius (Ethiopian Monster) or Belua Ponti (Monster of the Deep ).
In Chinese mythology, a Kun, also called Peng, is a kind a monster fish-formed. A Dapeng is a gigant bird which converts into a Kun. Kun is related to Leviathan.
No. Seahorses are real creatures. They are a fish that is closely related to the pipe fish.
Ceti or Cetus