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Octavio’s Book Cnidarians. Cnidarians are Invertebrates (no backbones). The hydras and jellyfishes are cnidarians. The jellyfish can be a few inches in width and the largest can be over 6 feet. Cnidarians are aquatic animals, mostly marine. The anemone and the red
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Cnidarians are Invertebrates (no backbones)
The hydras and jellyfishes are cnidarians
The jellyfish can be a few inches in width and the largest can be over 6 feet
Cnidarians are aquatic animals, mostly marine
The anemone and the red coral are cnidarians
The body of a cnidarians is a sack with an opening.
This opening is surrounded by many poisonous tentacles
The Portuguese Man of War is a colony of poisonous cnidarians
Some cnidarians have the Medusa form, and living free
In the medusa form the tentacles dangle down
The sea nettles have medusa form
Others cnidarians have the Polypform, and living in colonies
Polyps form is when the cnidarians are connected to the bottom
The brain coral and the pillar coral have the polyps form
The coral polyps form reefs that can stretch for thousand of miles
The largest coral reef is the Great Barrier Reef at the northeast of Australia
The coral reef are the home of an amazing variety of animals
There are more than 11,000 species of Cnidarians