Category: ‘Invertebrates’

  • Acorn Barnacle 7695109434 O

    Acorn Barnacle

    Balanus glandula
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    Description This very large unstalked, sessile barnacle is not easily confused with any other species Has a large aperture and lacks longitudinal striations on any of the large body plates Size Diameter to 4 inches Height to about 3 inches Range Southern Alaska to La …

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  • Aggregating Anemone 7695174422 O

    Aggregating Anemone

    Anthopleura elegantissima
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    Description White unless exposed to the sun, in which case it is deep green or bluish in color (due to the presence of fluorescent green pigment and algae growing within its tissues) with fine purple stripes radiating out from the mouth to the tentacles with …

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  • Black Abalone 7695030406 O

    Black Abalone

    Haliotis cracherodii
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    Description The smooth other shell’s color ranges from dark blue to black Five to seven of the shell holes are usually open Length to about 8 inches Range Mendocino, California to Cabo San Lucas, Baja California Habitat Inhabit rocks and in crevices, for intertidal zone …

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  • California Mussel 7695182206 O

    California Mussel

    Mytilus californianus
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    Description Generally grayish black with very hard shells that only the strongest (or smartest) of predators can open Thick, pointed at anterior end, broadening posteriorly sculptured with strong radial ribs and irregular growth lines Inside – blue and faintly pearly Grows to full size in …

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  • Giant Keyhole Limpet 7694963816 O

    Giant Keyhole Limpet

    Megathura crenulata
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    Description Mantle usually covers most or all of the shell Shell has a large oval opening in the center Mantle color varies from black to mottled gray Length of shell to about 6 inches Range Mendocino County, California to Isla Asuncion. Baja California Habitat Found …

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  • Giant Spined Star 7688319668 O

    Giant Spined Star

    Pisaster giganteus
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    Description Large white spines, uniformly spaced with swollen tips, surrounded by blue or purple rings, with a body color that is light brown or blue Diameter – up to 22 inches Range Vancouver Island, British Columbia to Isla Cedros, Baja California Habitat Lives on rocky, …

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  • Gooseneck Barnacle 7695092912 O

    Gooseneck Barnacle

    Pollicipes polymerus
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    Description Goose barnacles (order Pedunculata), also called stalked barnacles or gooseneck barnacles, are filter-feeding crustaceans that live attached to hard surfaces of rocks and flotsam in the ocean intertidal zone All goose barnacles have five plates Range Southern Alaska to at last Punta Abreojos, Baja …

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  • Mantis Shrimp 7688355020 O

    Mantis Shrimp

    Hemisquilla ensigera californiensis
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    Description Carapace very small and eyes large Legs, pleopods, and uropods bright blue Size to 12 inches in length Range Point Conception, California to the Gulf of California and Panama Habitat Sub-tidal to 300 feet on mud or sand or shell, where it digs burrows …

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  • Market Squid 7673021118 O

    Market Squid

    Loligo opalescens
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    Description Loligo opalescens is a small squid (mantle length ML up to 160 mm) in the family Loliginidae. Range Adult Loligo opalescens move off the continental shelf by day and can be found to depths of 500 m Habitat The species lives in the Eastern …

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  • Ochre Sea Star 7669302930 O

    Ochre Sea Star

    Pisaster ochraceus
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    Description This sea star has five stout rays that range in length from 4 to 10 inches The rays are arranged around an ill-defined central disk While most individuals are purple, they can be orange, Range ochre, and brown The aboral surface contains many small …

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  • Purple Striped Jelly 7689012572 O

    Purple-Striped Jelly

    Chrysaora colorata
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    Description The bell (medusa) of this jellyfish is usually silver-white with purple bands radiating from the center There are also purple spots on most individuals Size the bell may reach 30 inches or more in diameter The length of the total jelly can reach 8 …

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  • Red Abalone 7695050988 O

    Red Abalone

    Haliotis rufescens
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    Description Outer shell is usually brick-red, occasionally with bands of green or white Three or four of the holes in the shell remain open Length up to 12 inches Range Sunset Bay, Oregon to Bahia Tortugas, Baja California Habitat Found on rocks; occasionally will move …

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  • Red Sea Urchin 7681164010 O

    Red Sea Urchin

    Strongylocentrotus franciscanus
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    Description This large sea urchin has sharp spines that are about 1/2 as long as the diameter of the chest Color ranges from red, red brown, to dark purple Diameter to about 10 inches The animals have a mouth with special jaws (Aristotle’s Lantern) located …

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  • Rock Scallop 7695199714 O

    Rock Scallop

    Crassadoma gigantea (formally Hinnites giganteus)
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    Description Juveniles, up to about 2 inches, not attached and have ribbed upper shells Adults – attach to substrate, have very thick valves that have prominent ribs with short spines Shell diameter – to 8 inches Range Queen Charlotte Islands, British Columbia to Punta Abreojos, …

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  • Sand Dollar 7673160914 O

    Sand Dollar

    Dendraster excentricus
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    Description They are colored gray, brown, black or shades of purple Their size is variable but up to 100 mm wide,and a dome shaped carapace varying in height to about 10 mm, with a circular body or test Their body is covered with fine, spiny …

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  • Sand Star 7688983714 O

    Sand Star

    Luidia foliolata
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    Description Gray to tan-colored with plates and spines on the edges of each arm No suckers on the tube feet Width about 6 inches Range San Pedro, California to Ecuador Habitat Found on soft bottoms, usually sand; from the very low intertidal to about 180 …

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  • Sheep Crab 7688516066 O

    Sheep Crab

    Loxorhynchus grandis
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    Description This very large spider crab has a distinctive, robust, oval carapace covered with spines and tubercles The males have much longer claws Size Carapace width to about 6  inches Range Point Reyes, California to Punta San Bartholeme, Baja California Habitat Likes rocky as well …

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  • 1 Spanish Shawl1

    Spanish Shawl

    Flabellina iodinea
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    Description Nudibranch (sea slug) displaying stunning colors: a deep purple body, neon orange cerata, and scarlet rhinophores Marine gastropod mollusk 2.75 inches in length Range Coast of San Diego and Santa Catalina Island, CA Found in relatively shallow water in the Pacific Ocean from British …

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  • Spiny Lobster 7681133220 O

    Spiny Lobster

    Panulirus interruptus
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    Description This distinctive, large crustacean has very long antennae covered with small sharp spines It lacks the large claws of the Atlantic lobster The front of the body, especially around the eyes, is covered with sharp spines Length to 3 feet, and 150 years old …

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  • Two Spot Octopus 7688443550 O

    Two-spotted Octopus

    Octopus bimaculoides
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    Description This octopus has two blue eye spots, one below each eye The arms are fout to five times as large as the body Color variable Size: Length of body and arms to 2ft Range Santa Barbara, California to Cabo San Lucas, Baja California Habitat …

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  • 9 YellowCrab Andrew

    Yellow Crab

    Cancer anthonyi
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    Description Carapace smooth, hairless, and slightly domed Claws black-tipped, the black extending less than halfway up the top edge of the moveable finger Orange blotch on inside of claw. Range Humboldt Bay, California to Bahia Magdalena, Baja California Habitat Found on open sand bottoms in …

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