seahorse

/ˈsiːhɔːrs/
noun
  1. A small marine fish with a head that looks like a horse's head, a curled tail, and a body covered in bony plates.
    • Male seahorses carry the eggs in a pouch until the babies are born.
    • At the aquarium, the children were amazed by the tiny seahorse swimming upright.
    • The seahorse wrapped its tail around a piece of seaweed to stay still.