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Flower Animals: Coral Polyps & Sea Anemones
- 1. Class Anthozoa - The “flower animals”Class Anthozoa - The “flower animals” Coral Polyps & Sea AnemonesCoral Polyps & Sea Anemones
- 2. Class: AnthozoaClass: Anthozoa • Anemone means flower.Anemone means flower. • These animals are called flower animalsThese animals are called flower animals because of their flower-like appearance.because of their flower-like appearance.
- 3. Class: AnthozoaClass: Anthozoa • Their tentacles radiate from the top of theirTheir tentacles radiate from the top of their body like flower petals, and they are oftenbody like flower petals, and they are often brilliantly colored.brilliantly colored.
- 5. Coral StructureCoral Structure • Coral polyps secrete cups of calcium carbonate (limestone) for protection. • Since polyps live in large colonies, their calcium carbonate cups tend to grow together in large masses forming coral stone.
- 8. Coral StructureCoral Structure • They are comparable to tropical rainforests in that they harbor a tremendous amount of biodiversity.
- 9. This photograph shows a colony of coral polyps. Look closely and you will notice that each polyp has a tube-shaped body with tentacles surrounding the mouth at the top. In this photograph the polyps have their mouths so tightly closed that you can’t see them. The pink tissue between the polyps connects them all together allowing nutrients collected by one polyp to be shared with others in the colony.
- 10. There are manyThere are many species ofspecies of clownfish andclownfish and all establish aall establish a mutualisticmutualistic relationship withrelationship with sea anemones.sea anemones.
- 11. FeedingFeeding • How do most corals and anemones get their food? • Anemones use the cnidocytes in their tentacles to catch plankton or small organisms and fish.
- 12. FeedingFeeding • Corals also use their tentacles but only at night and it only makes up 10% of their diet.
- 13. FeedingFeeding • Corals depend on symbiotic algae living in their body to photosynthesize and produce food for coral (90% of diet). • Algae is called Zooxanthellae
- 14. FeedingFeeding
- 15. FeedingFeeding • Because zooxanthellae have to photosynthesize …… corals can only be found in: • Requirements for Coral Reefs • 1. Warm water • 2. clear water • 3. Shallow water