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Hydra (genus)


Hydra /ˈhaɪdrə/ is a genus of small, fresh-water animals of the phylum Cnidaria and class ... cnidae), is clothed with highly specialised stinging cells called cnidocytes. ... The cel...

Know your jellyfish: some sting, some don't - Seafriends home


But jellyfish are also harbingers of pollution that kills other marine organisms. ... With about 200 species world-wide, one could easily learn to identify them. ... All cnidaria have stinging cells adapted to stun and catch prey (see box). ... The slightly stinging purple jellyfish, Pelagia noctiluca has only few catch tentacles trail...

Animals With Tentacles | Animals - mom.me


Cnadrians are another group of sea animals that have tentacles. ... All cndarians have stinging cells called nematocytes that they use to envenomate prey or ...



Sea anemones and corals have the polyp form, while jellyfish are typical medusae. ... small (or thin) organisms (ones which have a large surface area compared to their volume) ... The tentacles are covered with stinging cells ( nematocysts).

Cnidaria Facts, information, pictures | Encyclopedia.com articles ...


It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras . ... tentacles, and many also have nematocysts (specialized stinging cells).

Information on Hydra


Hydra are truly fascinating small aquatic animals. ... If disturbed, a hydra will contract its body and tentacles, so that it now resembles a small 'blob'. ... They have a number of different types of stinging cells, called nematocysts, on their tentacles ...

5 Types of Jellies in the Gulf of Mexico — Sanibel Sea School


Sep 24, 2014 ... Moon jellies have short tentacles along the outer margins of the bell that are packed with nematocycts, or stinging cells. Jellies use these cells ...

Hydra and Other Cnidarians - The Biology Corner


A common organism to study in a biology lab is the hydra. ... Anemones are often very colorful and have hundreds of tentacles that wave in the water currents while ... The fish becomes paralyzed by the stinging cells and eventually is pushed into the anemone's ... In a single sentence, identify the MAIN POINT of the article.

Hydra - Northern State University


Unlike more complex animals, cnidarians are designed around 2 sheets of ... of hydra have been recorded in the Great Plains, but most are difficult to identify ... Classification depends on the structure of the eggs and stinging cells (see below) . All of these species have tentacles that are similar in length to the column or ...

Jellyfish - South Carolina Department of Natural Resources - SC.gov


Using their tentacles, polyps feed on microscopic organisms in the water. ... For defense and feeding jellyfish have specialized stinging cells which contain venom. ... Learning how to identify the different species can help you decide which ...

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The Wonders of the Seas: Cnidarians - Oceanic Research Group


They are among the simplest of the so-called "higher" organisms, but are also ... All Cnidarians have tentacles with stinging cells in their tips which are used to ...

Identification guide and stinging treatment for jellyfish and other ...


jellyfish and other stinging gelatinous organisms, which have specific cells called cnidocists that are like .... It has 4 oral arms and 24 thin marginal tentacles. It is.

Box Jellyfish, Box Jellyfish Pictures, Box Jellyfish Facts - National ...


Up to 15 tentacles grow from each corner of the bell and can reach 10 feet (3 meters) in length. Each tentacle has about 5,000 stinging cells, which are triggered not by touch but by the presence of a chemical on the ... Other Stinging Animals.