Marine life  /  Lobsters & squat lobsters  /  Pacific spiny lobster
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Species entry

Pacific spiny lobster

Panulirus penicillatus

A large spiny lobster of eastern Pacific reef, in crevices by day with only the antennae showing.

Size
To 40 cm
Depth
2–25 m
Habitat
Crevices, antennae showing
Active
Night
Range
Eastern Pacific
Rarity
Galapagos Islands
2 stars of 5, usually seen in a week
SP-01
pacific spiny lobster · full body · habitat
4:3 · min 2400px

To about 40 cm total length, typically 30, with males larger than females. Colour runs yellowish-green to rusty brown or bluish-black, with white spots and dark legs carrying yellow lengthwise stripes.

The blue spiny lobster is the pair, and the antennal plate rather than colour is what separates them.

The sources disagree on depth, one giving under four metres and another one to sixteen; both describe a surge-zone and outer-slope animal. It forages at night and stays in a crevice by day.

Listed as Least Concern but heavily exploited throughout its range.

Where to find:

LocationRarity Best monthsDepthHabitat
Galapagos Islands Ecuador editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–25 m
Crevices, antennae showing
Cocos Island Costa Rica editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–25 m
Crevices
Islas Revillagigedo Mexico editorial estimate
3 stars of 5, a good week should turn one up
Year-round
3–25 m
Under boulders and in crevices

Ratings are per location: 1 means found on most dives that look for it, 5 means a handful of records. Where enough dives have been logged the figure is calculated from them; otherwise it is an editorial estimate, and says so. We publish habitat and destination, not the dive site.

Related species

SP
blue spiny lobster
16:10
Blue spiny lobster
Panulirus gracilis
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caribbean spiny lobster
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Caribbean spiny lobster
Panulirus argus
Crinoid squat lobster, Allogalathea elegans
Crinoid squat lobster
Allogalathea elegans
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galapagos slipper lobster
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Galapagos slipper lobster
Scyllarides astori