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

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13y ago
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9y ago

No, they are echinoderms, along with sea cucumbers and starfish.

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14y ago

Sea Urchins are multicellular animals, phylum echinodermata.

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Q: Are sea urchins sessile
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Related questions

Do sea urchins live in Connecticut?

No. Sea urchins live in the sea.


What does the process of fertilization in sea urchins produce?

More sea urchins.


What category do sea urchins fit into?

The classification of a Sea Urchin is Echinoidea


How are sea urchins and kelp forests connected?

sea urchins eat kelp.


How many purple sea urchins are there?

there are excatly 3million purple sea urchins


What are sessile echinoderms?

sea lilies


What phylum do sea urchins belong?

Sea urchins belong to the phylum Echinodermata.


Are sea urchins predators?

No. Sea urchins are primary consumers and only eat sea weed, algae and kelp.


Where can sea urchins be found?

in the sea


Is sea urchins herbivorous?

Yes, sea urchins are herbivores because they mainly feed on algae.


Ho do sea urchins reproduce?

Sea urchins reproduce by releasing eggs and sperm into the water, where external fertilization takes place. Once fertilized, the eggs develop into larvae that eventually settle and grow into adult sea urchins. Some species of sea urchins can also reproduce by asexual means, such as splitting or budding.


Where can you find a sea urchins?

Sea urchins are found generally in the sea, however they can also be found in/on rock pools or areas near to the sea.