What does the cryptic crossword clue "Sort, yes, at sea to find edible molluscs (7)" mean?

The wordplay uses an anagram. anagram of SORT, + YES, = OYSTERS The answer is OYSTERS.

Sort, yes, at sea to find edible molluscs (7)

Daily Mail Cryptic #17295 | 24 Across | 2024-02-16 flower