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Sea stars are also known as starfish, but they are not fish at all.
A sea star can regrow arms that are lost, and if cut in half, some sea stars can grow into two separate creatures.
Sea Star
Related Category: Zoology: Invertebrates
also called starfish, echinoderm of the class Asteroidae, common in tide pools. Sea stars vary in size from under 1/2 in. (1.3 cm) to over 3 ft (90 cm) in diameter.
Sea Stars
A student web page designed by Sheila Hollanders and Iona To
Anatomy:
Sea stars are radially symmetrical, and their arms are arranged around a central disk.
Sea stars are purely marine animals, even using sea water instead of blood to pump nutrients throughout their bodies.
Photograph by David Doubilet
Map ...
Caribbean Sea Star
Here you can see the tube feet of this animal. The seastar can use its hundreds of feet to grasp corals or rocks for movement, or shells of prey for feeding.
next photo ...
Sea Star II
Captain Ray Brooker
Pier B14
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Scuba Diving Instructors aboard at extra cost ...
Leather sea star
Class: Asteroidea
Status: IUCN: Not Listed; CITES: Not Listed; COSEWIC: Not Listed
Lemur leaf frog ...
Sea stars or starfish are marine invertebrates belonging to Kingdom Animalia and phylum Echinodermata, class Asteroidea. The names sea star and starfish are also used for the closely related brittle stars, which make up the class Ophiuroidea.
Sea stars, snails, spiders, and earthworms -- what do they have in common? No backbone! They're all invertebrates, animals without backbones.
Spineless Wonders ...
Includes sea stars, sea cucumbers, & sea urchins
ARTHROPODS
Includes spiders, scorpions, shrimp, lobster, crabs, insects, millipedes, & centipedes ...
Sunflower sea star,
Sunflower starfish
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A gull eating a sea star
A gull eating a crayfish
A gull attacking a coot. Note that this gull is probably going after the bread or other food item in the bill of this American Coot, though Great Black-backed Gulls are known to kill and eat coots.
Asterias forbesi, Common Sea Star
Atlantoraja cyclophora, Eyespot Skate
Aulostomus chinensis, Chinese Trumpetfish
Austrorossia antillensis, Antilles Bobtail Squid
Bairdiella chrysoura, Silver Croaker
Balistes carolinensis, Grey Triggerfish ...
Sea stars and sea urchins - Echinodermata
Sea stars, sea urchins and their relatives
Sea Tulip
Sea Tulips, Pyura spinifera
Seagrass and a Pipefish Illustration ...
chocolate chip sea star (Protoreastor nodosus)
christmas tree worm (Spirobranchus giganteus)
cleaner shrimp (Lysmata amboinesis)
closed brain coral (Favites sp.)
common urchin (Echinometra mathaei)
condylactis anemone (Condylactis sp.) ...
Their diet consists mostly of crabs; also shrimp, snails, clams, jellyfish, sea stars, and fish.
First, salmon need to be able to have ample food resources, such as: planktonic diatoms, copepods, kelps, seaweeds, jellyfish, and sea stars.
They eat a wide variety of invertebrates, including clams, snails, worms, sea stars, sea urchins, crabs, squid, octopuses, and abalone. Alaskan sea otters also eat fish.
Class: Asteroidea (sea stars and starfishes)
Class: Crinoidea (feather stars and sea lillies)
Class: Echinoidea (heart urchins, sand dollars, and sea urchins)
Class: Holothuroidea (sea cucumbers) ...
Echinoderms: Basket Star, Bradley's Sea Star, Brittle Star, California Sea Cucumber, Pencil Urchin, Pink Sea Star, Red Sea Urchin, Rose Star, Sand Dollars, Sea Apple, Sun Flower Star, Purple Sea Urchin (Strongylocentrotus purpurtus), ...
The starfish (commonly as a sea star) is generally found with 5 arms that are attached to a central disc. This central disc is the activity center of the starfish and also contains the mouth of the starfish.
Otters also are known to eat crabs, octopus, squid, sea stars, and fish.
In the wild, sea otters eat a wide variety of benthic invertebrates like clams, crabs, urchins, snails, octopus, mussels and sea stars. They may eat fish. Individuals seem to have food preferences they learn from their mothers.
Clearnose Skates
Mantis Shrimp
Sea Stars, etc.
Web Port - Links to Related Web Sites of Interest ...
Invertebrates are creatures that do not have a backbone. In Antarctic waters there are large quantities of squid, cuttlefish, octopus, marine snails, limpets, sponges, sea stars, sea squirts, sea anemones, sea urchins, jellyfish and many others.
Coral reefs are one of the most biologically diverse ecosystems, rivaling rain forests for the number of species inhabiting them. About 6,000 to 8,000 fish species as well as sponges, sea anemones, bryozoans, worms, sea stars, crustaceans, ...
Barnacles, limpets, whelks, algae and periwinkles can often be found on the rocks in this zone. Other animals like crabs and sea stars aren't as common in this area because it gets so little sea water.
it, but invertebrates, or animals without a spinal chord, make up most of the animal kingdom. These include sponges, jellyfish, worms, arthropods (insects, shrimp, spiders), mollusks (snails, clams, octopuses), and echinoderms (sea urchins, sea ...
During molting and while wintering, they dive for snails, clams, mussels, amphipods, crabs, sand dollars, sea stars, and fish like sculpin and small cod. Reproduction Pairs of Spectacled Eiders appear to form at sea in late winter.
 See also: Coral, Shell, Snail, Shrimp, Sea Urchin
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