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Webster 1913 Edition
Sea snake
Sea′ snakeˊ
.(Zool.)
Any one of many species of venomous aquatic snakes of the family
Hydrophidae
, having a flattened tail and living entirely in the sea, especially in the warmer parts of the Indian and Pacific Oceans. They feed upon fishes, and are mostly of moderate size, but some species become eight or ten feet long and four inches broad.