Cnidaria is a phylum containing over 10,000 species of animals found
exclusively in aquatic (freshwater and marine) environments: they are
predominantly marine species. Their distinguishing feature ...
It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras
. ... tentacles, and many also have nematocysts (specialized stinging cells).
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 ...
jellyrisk.eu/media/cms_page_media/115/27.Jellyfish Guide 2014 - Spain (english).pdf
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.
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
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 (
Jellyfish have stinging cells, called nematocysts. The 'sting' is coiled and fired like
a harpoon when triggered. All species have nematocysts in their tentacles, ...
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 ...
The Cnidaria (pronounced nidaria)as a group of animals are well known to many
... as the Radiate Animals because they both have radial or biradial symmetry. ...
specialised cells which contain the Nematocysts, the stinging organelles that
allow ... at the opening, generally surrounded by tentacles, there is no distinct