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coral - choose a jigsaw puzzle to solve

Corals are marine invertebrates in the class Anthozoa of phylum Cnidaria. They typically live in compact colonies of many identical individual polyps. The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "group" is a colony of myriad genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in length. A set of tentacles surround a central mouth opening. An exoskeleton is excreted near the base. Over many generations, the colony thus creates a large skeleton characteristic of the species. Individual heads grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously over a period of one to several nights around a full moon.
Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added 4 weeks ago by andi

114

Caribbean. - Underwater life in the Caribbean.
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Caribbean.

Added 2 months ago by Grażyna

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Dolphins in the shoal - Dolphins enjoying dinner
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Dolphins in the shoal

Added 4 months ago by Makronos

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Underwater world. - Coral reef. Underwater world.
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Underwater world.

Added 4 months ago by Grażyna

192

Underwater world. - Mysterious underwater landscape.
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Underwater world.

Added year ago by Grażyna

150

Underwater world. - Mysterious underwater world.
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Underwater world.

Added year ago by Grażyna

104 2