California Mussel
California Mussel
Mytilus californianus
Mollusca
COMMON

Stats

Lifespan
10-20 yrs
Size
Large
Diet
Filter Feeder
Activity
Cathemeral
Social
Colony
Biome
Rocky intertidal
Range
North America
Movement
Sessile
Breeding
Egg-laying
Defense
Armor
Status
Common

About

The California Mussel clings to wave-battered Pacific rocks using a bundle of protein threads called a byssus, strong enough to survive direct surf impacts. Dense mussel beds act as a keystone structure, sheltering hundreds of other invertebrate species within their shells and gaps.

Life cycle

  1. 1.
    juvenile
    A juvenile mollusk takes adult form after its larval phase and begins building or growing its shell.
  2. 2.
    adult
    Fully grown at adult shell size or body length.

Learn more

Taxonomy

Kingdom
Animalia
Phylum
Mollusca
Class
Bivalvia
Order
Mytilida
Family
Mytilidae
Genus
Mytilus
Species
Mytilus californianus