オニヒトデ

noun

crown-of-thorns starfish

Refers specifically to Acanthaster planci, a venomous starfish known for coral reef predation.

• オニヒトデはサンゴを食たべる。

  Crown-of-thorns starfish eat coral.

• 沖おき縄なわの海うみでオニヒトデが大たい量りょう発はっ生せいした。

  There was an outbreak of crown-of-thorns starfish in the sea off Okinawa.