No - sea urchins are part of the echinoderm phylum, with sand dollars, starfish and sea cucumbers.

Yes some species are safe to hold, I held one on my recent Caribbean cruise. However other species are not safe to touch. If you dont know the best bet is not to touch it as they can be venomous.

sea urchins weigh about 2300 pounds, just like your mama!

I would say there aren't many living, wild, seahorses left in the world's oceans, as many species are endangered. Here is an exerpt from WildInvest from a few years ago:

"Many seahorse species were added to the World Conservation Union's Red List of Threatened Animals in 1996. Both heavy exploitation and habitat degradation are contributing to declines of up to 15-70% in many seahorse populations over periods of 5-10 years. At least twenty million seahorses are traded each year - the majority used as traditional medicines. The aquarium trade also deals in live seahorses, despite the fact that they are difficult to keep in an aquarium. In this way, a vicious circle is created: aquarium owners often replace the dead ones, thereby contributing to their continuing decline. Seahorses are also traded as tacky souvenirs, incorporated in shell craft, yo-yos and other curios

Seahorses are found in nearshore habitats that are among the most threatened in the world. Degradation and destruction of these coastal eccosystems due to mangrove cutting, coral mining, dynamite fishing, trawling, land-derived pollution and a host of other human activities negatively affect these threatened species.

Seahorses are caught as target catch and trawl by-catch in the coastal waters of Vietnam. In recent years, there has been concern that the number of seahorses is decreasing. However, prior to the establishment of Project Seahorse - Vietnam, no fisheries data were available for seahorses."

sea urchins eat eaten by crabs, sunflower stars, snails, sea otters some birds, some fish and people...

the three germ layers on a squid are the ectoderm, endoderm and mesoderm

A young sea urchin is called larva, pluteus (free-swimming stage), or juvenile.

Anemones, also known as windflowers, are a diverse group, with various species blooming in spring and fall. Anemones display variation in their daily activity patterns, but it is not clear whether all of them sleep.

Yes. Classes of mollusks which include clams, oysters, and other bivalves are sessile filter feeders.

yes an angler fis is a bioluminescent animal this is because all jelly fish are biolumenscent animals...........................................................................yes an angler fis is a bioluminescent animal this is because all jelly fish are biolumenscent animals...........................................................................

the sea otter

no

The zone sea urchins live in is nothing. They don't live in the ocean. Sea urchins live high up in trees. Their diet consists of elifunts and tiygurs. They are eetun by ants and spiydurs. Also sea urchins can fly. And they have x-ray vishun and freez breth. They also have jiunt manshuns and like to punch thing with thayr soopur strong fists. Also they are imurtel which means they can't die... evur. These are truly fasinateng kreechirs.

they do not make sounds or noises but they send out chemicals and they only communicate when they are mating

crabs sun flower star



the crabs are as big as a rock


they are stars

All vertebrate animals (animals with spines) and a few invertebrates

("echinoderms" - starfish, sand dollars, sea urchins, and sea

cucumbers) have closed circulatory systems.

second level

2 mph

no, they are a crustacian. an echinoderm not a crustacean.