Answer: seasnake

AnswerCrossword Clue
SEASNAKEMonster of the deep.
SEASNAKEPreyer on tropical fish
SEASNAKEReef wriggler
SEASNAKEJapanese delicacy
SEASNAKEPacific wriggler
SEASNAKEDangerous swimmer with an oarlike tail
SEASNAKEVenomous swimmer
SEASNAKESource of a venomous underwater bite
SEASNAKECoral reef inhabitant