Ocean Invertebrate That Can Grow on Whales
This page is the CodyCross answer for the clue below from Trip to Spain, Group 845, Puzzle 1 (Madrid and Barcelona).
Question is: Ocean Invertebrate That Can Grow on Whales
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.