American lobster (Homarus americanus) in its aquatic habitatPhoto: Trougnouf ยท Image source ยทCC BY 4.0

Animal profile ยท Crustaceans ยท Clawed lobster

American lobster

Homarus americanus

The American lobster is a large Atlantic crustacean with powerful claws. It grows by shedding its hard shell and is most active at night.

Not a fish ยท an aquatic neighbor

Water

Saltwater

Rocky coastal seafloor, reefs, and muddy bottoms.

Temperature

Range not established

A dependable species-specific wild temperature range was not established from the reviewed sources, so both values are null.

Size

Up to about 64 cm (25 in) long

About as long as a baseball bat

Lifespan

May live more than 50 years, though wild ages are difficult to determine.

Life expectancy varies with place, conditions, and what scientists have been able to observe.

01 ยท Signature adaptation

What does it do?

It shelters in rocky crevices and forages mostly at night. It molts repeatedly, becoming soft and vulnerable until the new shell hardens.

Its superpowerIt can regenerate lost limbs over successive molts.

02 ยท Home coordinates

Where does it live?

Labrador and Newfoundland south to New Jersey, with occasional farther records.

Regions: Northwest Atlantic ยท North American Atlantic coast

03 ยท The menu

What does it eat?

It opportunistically crushes or scavenges many bottom-dwelling animals and plants.

Omnivore: crabs, mussels, worms, fish, algae, carrion.

04 ยท Remember this

Two wow facts

01

Shell-changing growth

Young American lobsters molt roughly 20 to 25 times before reaching reproductive size.

Sources [1]

02

Claw specialists

The two claws are different: one crushes hard prey while the other cuts or tears.

Sources [1]