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Antozoa

Antozoa


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Sea Anemone: Antozoan Example

What they are - biological definition

Antozoa are invertebrate animals that live in the sea. These animals are part of the phylum Cnidaria. They are animals of sessile life, that is, they live trapped (do not move) in the marine substrate. About six thousand species of antozoa are currently known.

The word is of Greek origin, and anthos = flower and zoa = animals. Thus Anthozoa means "flower animals."

Antozoa are divided into three subspecies: Alcyonaria, Hexacorallia and Ceriantharia.

Main features:

- Most species (especially corals) live in colonies.

- They are carnivorous animals and get their food from the marine fauna.

- They have no developmental jellyfish phase.

- They have antozoan polyp.

- They are coral shapers. They use calcium carbonate found in marine waters as the basis for coral formation.

Examples of antozoa:

- Sea Anemone

- Rocky Corals

- Soft corals (no skeleton)

- Gorgonians

- Indo-Pacific Blue Corals

- Sea Pens

- Octocorals

Scientific classification:

Kingdom: Animalia

Phylum: Cnidaria

Class: Anthozoa

Gorgonia (Ventaline gorgonia): example of antozoan animal



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