top of page
< Back

Spiny Lobster

(Panulirus interruptus)
Population status in the wild: Least Concern

The Spiny Lobster is a species of lobster found along the rocky and reef-rich coastal areas of the eastern Pacific Ocean, from southern California to Baja California. This lobster is easily recognized by its long, spiny antennae, which are used for sensing its environment, and its hard, smooth exoskeleton that is typically a reddish-brown or orange color with yellow or white spots. Unlike their more familiar clawed relatives, Spiny Lobsters lack large front claws and instead rely on their strong legs and spines for defense. Adults typically grow to 18 to 24 inches in length, although some individuals can reach up to 36 inches.

Spiny Lobsters are nocturnal and primarily carnivorous, feeding on a variety of small marine animals, including mollusks, crustaceans, and other invertebrates. They are opportunistic scavengers, hunting during the night or seeking out food that has been abandoned by other predators. In aquariums, they are fed a diet of small fish, shrimp, and other invertebrates. These lobsters are often found in rocky crevices or coral reefs where they can hide during the day to avoid predators.

Spiny Lobsters are social creatures, often found in groups or clusters in dens, particularly during the molting period, when they are vulnerable. They are known to migrate in large groups at certain times of the year, traveling to deeper waters or to breeding grounds. They communicate with each other using tactile signals and by rubbing their antennae together. The Spiny Lobster's nocturnal behavior and social structure make it a fascinating species to observe in the wild.

The Spiny Lobster has a lifespan of around 20 years in the wild, although many individuals face threats from predation, overfishing, and environmental changes. The species is currently listed as Least Concern due to its wide distribution and stable populations, although local populations may be affected by habitat destruction, fishing pressures, and climate change. Spiny Lobsters are an important part of the marine food web, both as predators and prey, and are highly valued in commercial and recreational fisheries.

Fun Facts:
The Spiny Lobster gets its name from the long, sharp spines that cover its body, which help protect it from predators like fish and sea otters.

Unlike other lobsters, the Spiny Lobster lacks large claws, relying instead on its powerful legs and antennae for defense and foraging.

Spiny Lobsters are known for their long migrations, often traveling in large groups across the ocean floor, particularly during breeding seasons.

ABOUT US >

Welcome to Cabrillo High School Aquarium, a student run program. Here at Cabrillo High School, we encourage growth and development within our students. As such our directory as well as our program are constantly evolving and changing, similar to the natural world.

​​

Students that made this possible

​

This site was last updated: 04/29/2025

​

CONTACT >

T: (805) 742-2888

E: eisen.greg@lusd.org

bottom of page