1. 4 - Bryozoon attached to adult scallop shell

2. Cockle (n.1) type of edible European mollusk, early 14c., from Old French coquille (13c.) "scallop, scallop shell; mother of pearl; a kind of hat," altered (by influence of coque "shell") from Vulgar Latin *conchilia, from Latin conchylium "mussel, shellfish," from Greek konkhylion "little shellfish," from konkhē "mussel, conch." Phrase Cockles of the heart "inmost recesses of one's spirit