Unformatted text preview: Cuttlefish Chiton Phylum Mollusca Class Polyplacophora Habitat Intertidal, shell creates attachment Low tide attach strongly, difficult to remove High tide move around and feed on algae with radula. Kelletia kelletii Kellet's whelk Phylum Mollusca Class Gastropoda Larger snail off CA coast Eat small crustaceans and dead animals Habitat kelp beds on rocky and soft bottoms Norrisia norrisii Norris's top snail Phylum Mollusca Class Gastropoda Bright red soft tissue Diet Macrocystis Vertically migrates up and down the alga Tegula sp. Black turban snail Phylum Mollusca Class Gastropoda Habitat rocky shores and intertidal Use radula to scrape algae off rocks. Lithopoma undosum Wavy turban snail Phylum Mollusca Class Gastropoda Habitat rocks and kelp beds Use radula to scrape algae off rocks. Moves slowly so algae and invertebrates grow on its shell Littorina scutulata Checkered periwinkle snail Phylum Mollusca Class Gastropoda Habitat splash zone, above high tide mark Mostly out of water but must wet gills Scrapes algae off rocks Abundant at Leo Carillo and rocky intertidal Cypraea spadicea Chestnut Cowry Phylum Mollusca Class Gastropoda Habitat ledges and crevices shaded by seaweed and eelgrass Eats anemomes, sponges, snail eggs Shell used as ornaments and money Megathura crenulata Giant Keyhole Limpet Phylum Mollusca Class Gastropoda Largest of keyhole limpets Scraps off algae w/ radula Excurrent siphon projects through to let out water after passing through gills Collisella sp. Limpet Phylum Mollusca Class Gastropoda Habitat rocky intertidal Graze on diatoms when wet Cling tightly in homesite when dry with muscular feet Pteropurpura festiva Festive Murax Phylum Mollusca Class Gastropoda Eats mussels and tube snails 90% of mortality in mussel beds due to this species Serpulorbis festiva Scaled worm shell Phylum Mollusca Class Gastropoda Shells partially coiled tube attached to substrate. No operculum Use mucous to catch drifting plankton Flabellina iodinea Spanish shawl Phylum Mollusca Class Gastropoda Habitat rocks on kelp beds. Moves by swimming Nudibranch Orange gills on back for respiration Aplysia californica California Sea Hare Phylum Mollusca Class Gastropoda Eats red algae that gives it red color Large mating aggregations in spring and summer Hermaphrodites and can fertilize each other Releases redpurple fluid for defense Used for learning and memory/ nervous system research Mytilus californianus California Mussel Phylum Mollusca Class Bivalvia Habitat: rocky shores and tidepools Filter feed with gills Mussels off limits in summer and fall Dominant space competitor Sea stars important predator that also exposes them to more removal from waves Protothaca sp. Little neck clam Phylum Mollusca Class Bivalvia Oyster Oyster Phylum Mollusca Class Bivalvia Pacific Japanese oyster: Crassostrea gigas Hinnites sp. Rock scallop Phylum Mollusca Class Bivalvia Free swimming until valves grow to 1" when it settles on solid object Mantle secretes limy material, cementing lower shell for rest of life Shell often encrusted w/ sponges, hydroids, and other invertebrates Nautilus pompilius Chambered nautilus Phylum Mollusca Class Cephalopoda Nocturnal Tentacles without suckers eyes without lenses Feed on crustaceans and small fish Use siphuncle to control bouyancy Loligo opalescens Common or Market Squid Phylum Mollusca Class Cephalopoda Most intelligent and fastest swimming aquatic invertebrates. Abundant in pelagic marine environments, hunting fish. Prey of fish and mammals CA squid industry collapsed in 1998 after El Nino event Spawn at night and deposit eggs on soft bottom 1040 fathoms deep Fishing occurs in spawning sites, most valuable fishery in the state Lives 68 months after hatching Pictures squid and eggs Octopus bimaculoides California twospot octopus Phylum Mollusca Class Cephalopoda Friendly, best pet octopus 2foot armspan Habitat in holes of intertidal, up to 70ft depth Range San Simeon to Baja CA Move w/ arms or jet propel Adults eat mollusks, crustaceans and sometimes fish Megablanus californicus California barnacle Phylum Arthropoda Class Crustacea Pollicipes polymerus Leaf barnacle Phylum Arthropoda Class Crustacea Range Alaska to Baja CA Habitat rocks to intertidal to subtidal Pachygrapsus crassipes Shore Lined Crab Phylum Arthropoda Class Crustacea Range Oregon to Gulf of CA Habitat High to midIntertidal Eats plants and animals Steals other crabs burrows Captures flies at lowtide Females attract males with pheromone, then males turn onto their backs and females walk over them. Females produce 50,000 eggs Loxorhynchus sp. Decorator crab Phylum Arthropoda Class Crustacea Attaches algae on hooks as camouflage Cancer sp. Includes Dungeness crab and edible crab Phylum Arthropoda Class Crustacea Scavenger and predator of snails, clams, and echinoderms Eaten by scorpion fish, barred sand bass, and sea otters Heterocrypta occidentalis Sandflat elbow crab Phylum Arthropoda Class Crustacea Long arms to bury themselves in the sand Abundant in Palos Verdes Isocheles pilosus Moonsnail hermit crab Phylum Arthropoda Class Crustacea Wear discarded shells to protect soft abdomen Decapods 5 pairs of legs, including claws. Larger claw for defense and food shredding Smaller claw for eating 2nd and 3rd pairs help crab walk 4th and 5th hold hermit crab in shell Pagurus armatus Hermit crab Phylum Arthropoda Class Crustacea Very hairy legs and claws are distinctive Found in shells of moon snails Pagurus samuelis Hermit crab Phylum Arthropoda Class Crustacea Dark green with blue joints Common in intertidal Fond of Tegula shells Pugettia sp. Phylum Arthropoda Class Malacostraca Habitat in pilings among kelp Do not intentionally decorate carapace Coloration and disposition for defense P. producta feed on barnacles, hydroids, and bryozoans when kelp die in winter Pachycheles sp. Porcelain crab Phylum Arthropoda Class Malacostraca Not considered "true crabs" and placed in Anomura. Anomurans include porcelain crabs, hermit crabs and ghost shrimp Feeds on plankton and detritus with setae (hairs) on outer maxillipeds (jaw appendages). Limulus polyphemus Horseshoe crab Phylum Arthropoda Class Chelicerata More related to spiders and mites than crabs Range Gulf of Mexico and Atlantic Coast Living fossils, unchanged for 400 million years Blue blood Used in medical research for bacterial defenses (they have LAL: Limulus Amoebocyte Lysate) Class Crinoidea Feather stars Oldest class of echinoderms Long, feathery arms that curl up during the day Unfold to filter feed at night Cirri appendages used for locomotion Pisaster ochraceus Ochre sea star Phylum Echinodermata Class Asteroidea Few enemies except for sea otters and sea gulls Depths 300 ft Feed on attached/slow moving prey like mussels, barnacles, snails, limpets, chitons Lives over 20 years Pisaster giganteus Giant sea star Phylum Echinodermata Class Asteroidea Range British Columbia to Baja CA Habitat rocks and pier pilings, low intertidal to subtidal in protected coasts Eats bivalves, snails, chitons, barnacles, and Mytilus californianus. Extends tube feet by water vascular system Opens shell and inserts stomach and digests prey inside its own shell Pisaster brevispinus Spiny pink star Phylum Echinodermata Class Asteroidea Asterina miniata Bat star Phylum Echinodermata Class Asteroidea Foods on both plants and animals Hosts to commensal worms Astropecten armatus Sand star Phylum Echinodermata Class Asteroidea Crawls on soft sediments in search of clams for prey Common on sandy beaches Ophioderma panamense Panama brittle star Phylum Echinodermata Class Ophiuroidea Range Santa Rosa Island to Galapagos Islands Habitat under rocks intertidal, algal holdfasts, coral. Intertidal to subtidal. Whole arms instead of tube feet for locomotion "Brittle" comes from arm breaking off easily as defense. Eats detritus or small prey grabbed by arms into jaws. Ophiopteris sp. Flatspined brittle star Phylum Echinodermata Class Ophiuroidea Amphipholis squamata Dwarf brittle star Phylum Echinodermata Class Ophiuroidea Range nearly worldwide Habitat boreal, temperate, tropical waters. Branches of coralline algae and under stones. Mid intertidal to subtidal. Eats unicellular algae, protozoans, small animals, detritus Gorgonocephalus sp. Phylum Echinodermata Class Ophiuroidea Basket star Lytechinus anamesus White sea urchin Phylum Echinodermata Class Echinoidea Range Santa Rosa Island to Baja CA Habitat sandy bottom 2 300m Eats small species of algae Move with tube feet, similar to Pisaster Strongylocentrotus purpuratus Purple sea urchin Phylum Echinodermata Class Echinoidea Range Alaska to Baja CA Habitat Rocks from low intertidal to 30ft Eat Macrocystis Turn kelp forests to urchin barrens Dendraster excentricus Eccentric sand dollar Phylum Echinodermata Class Echinoidea Range Alaska to Baja CA Habitat Sandy/mud bottoms, low intertidal to subtidal Walks w/ slender spines on oral surface of the body Feeds on algae or small animals Paristichopus parvimensis Warty sea cucumber Phylum Echinodermata Class Holuthuroidea Range Monterrey Bay to Baja CA "Warty" b/c of black tipped projections Tube feet line bottom but reluctant to move Max speed 3 ft/15 minutes Defense expel internal organs to scare or be eaten and regenerate them Defense expel sticky white substance to irritate predators. Must shave skin to get it off. Cucumaria miniata Orange sea cucumber Phylum Echinodermata Class Holuthuroidea ...
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- Winter '08
- Sea urchin, Phylum Mollusca Class, Mollusca Class