# Sirena Deep

> English word · Proper noun

## Definitions
1. A deep in Mariana Trench, Pacific Ocean; the third deepest known place on Earth, second deepest in the Mariana Trench.

## Etymology
From being chosen in a competition held among students in the Marianas to name the deep by the discovery team. From association with mythological sirens of the deep.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sirena-deep