Shellfish
This page is the CodyCross answer for the clue below from Life in the Castle, Group 2314, Puzzle 5 (Lady in Waiting).
Question
Shellfish
Answer
OYSTER
Word Meaning:
OYSTER — Any of certain marine bivalve mollusks, especially those of the family Ostreidae (the true oysters), usually found adhering to rocks or other fixed objects in shallow water along the seacoasts, or in brackish water in the mouth of rivers.
Definitions from Wiktionary.