A Crustacean That Attaches Itself Solidly to Rocks

This page is the CodyCross answer for the clue below from Tracking Time, Group 1045, Puzzle 5 (Noon Cannon).

Question is: A Crustacean That Attaches Itself Solidly to Rocks

and the answer is: BARNACLE

Word Meaning:

BARNACLE — A marine crustacean of the subclass Cirripedia that attaches itself to submerged surfaces such as tidal rocks or the bottoms of ships.

Definitions from Wiktionary.

A Crustacean That Attaches Itself Solidly To Rocks - Tracking Time CodyCross Answers | CodyCross Solutions