Aquarium of the Pacific | Online Learning Center

Aquarium of the Pacific | Online Learning Center | Glossary | Operculum

Browse by Letter
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
Z
All

O

Operculum: hard flap serving as a cover for the the gill slits in fishes or the opening of the shell in some gastropods when the body is retracted into the shell; Back