The cnidarians, which included sea anemones, corals, and jellyfish, had sac-like bodies and a simple digestive system with a mouth but no anus. They caught food using tentacles armed with ...

The animal kingdom contains a vast array of animals capability of remarkable regenerative abilities, but known are quite as adept at this healing task than sea-swelling Cnidarians, such as hydra ...

Cnidarians have a simple body plan, exhibit radial symmetry, and possess specialized harpoon-like stinging cells called cnidocytes that can be fired to aid in attachment, prey capture or defense ...

Jellyfish, along with other cnidarians such as corals and sea anemones, exhibit high regeneration abilities, but how they form the critical blastema has remained a mystery until now. A research team ...

Stinging cells, produced by cnidarians such as jellyfish and anemones, are one of ocean creatures' most effective defences. This method of protection can keep almost all predators at bay - but not the ...

But around 635 million years ago, that began to change. The first large, multi-celled organisms appeared, like cnidarians (including corals and jellies) and sponges. Then, about 540 million years ...

In the evolution of metazoans, sponges diverged first, followed by cnidarians (jellyfish and corals). Nearly all other metazoans are bilaterians — so named because they have bilateral symmetry.

The nervous systems of the radially symmetric organisms ctenophores (comb jellies) and cnidarians (which include anemones, hydras, corals and jellyfish) consist of a diffuse nerve net. All other ...

Fire corals belong to the hydrozoan group, meaning they are actually more closely related to jellyfish and other stinging cnidarians. They may look harmless, but can cause seriously painful skin ...

are highly diverse and can occur in symbiosis with mollusks, sponges, flatworms, protists, some ciliates, and cnidarians (including reef-building corals). Understanding the ecology and evolution of ...

Siphonophores are complex polymorphic pelagic gelatinous cnidarians, sometimes known as ‘string jellies’. At present the group comprises about 170 species. Habitat and life cycle Siphonophores are ...

Marine animal forests rich in sea life have been found in the shallow waters around Te Whanganui-a-Tara Wellington. "Marine animal forests are habitats formed by big groups of invertebrates ...