Sea Turtle Species Named for Its Smooth Shell

This page is the CodyCross answer for the clue below from Working From Home, Group 1223, Puzzle 1 (Scented Candle).

Question is: Sea Turtle Species Named for Its Smooth Shell

and the answer is: FLATBACK

Word Meaning:

FLATBACK — A chelonid turtle, Natator depressus, with low-domed carapace, endemic to the continental shelf of Australia.

Definitions from Wiktionary.