There are various synonyms for the phrase "in a watery grave" which indicate the same grave fate of a person drowning in the water. These synonyms include "lost at sea," "sunk at sea," "slain by the waves," "drowned," "submerged," "submerged in the deep," and "buried in the ocean depths." Any of these phrases emphasizes the tragedy of someone's death by water and brings to mind the danger and unpredictability of the sea. Whether it is a sailor or a swimmer, the notion of sinking into the watery abyss remains a haunting thought that deserves recognition through language.