Answer:

shell

Answer	Crossword Clue
SHELL	Turtle's home
SHELL	Conch or cowrie
SHELL	Cowrie protector

SHELL	Clam's house
SHELL	Oyster cloister
SHELL	Beach bum's find
SHELL	Mortar missile
SHELL	Beach souvenir
SHELL	Clam cover
SHELL	Work on nuts
SHELL	Bit of pasta

SHELL	Beachcomber's find
SHELL	Turtle's protection
SHELL	Yellow-and-red gas station symbol
SHELL	Exxon rival
SHELL	Turtle top
SHELL	Pasta shape
SHELL	Bullet casing
SHELL	Clam's home

SHELL	Pearl protector
SHELL	Clambake discard
SHELL	Seaside souvenir
SHELL	Shore souvenir
SHELL	Oyster-shucking discard
SHELL	Beach vacation souvenir
SHELL	Combing find
SHELL	Band ... (saucer-shaped stadium)

SHELL	Regatta craft
SHELL	Pasta piece
SHELL	Pasta bit
SHELL	Part of a beach house collection
SHELL	Snail's protection
SHELL	Bombard
SHELL	Jacket layer
SHELL	Gun cartridge

SHELL	Pyrotechnic device
SHELL	Beachcomber find
SHELL	Oyster exterior
SHELL	Peanut protection
SHELL	Work on pecans