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Sponge - Tróia
Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs, and have no body symmetry. The shapes of their bodies are adapted for maximal efficiency of water flow through the central cavity, where it deposits nutrients, and leaves through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are sessile aquatic animals. Although there are freshwater species, the great majority are marine (salt water) species, ranging from tidal zones to depths exceeding 8,800 m (5.5 mi). While most of the approximately 5,000–10,000 known species feed on bacteria and other food particles in the water, some host photosynthesizing microorganisms as endosymbionts and these alliances often produce more food and oxygen than they consume. A few species of sponge that live in food-poor environments have become carnivores that prey mainly on small crustaceans.
kiiti, Tanja - Loughcrew, Trudy Tuinstra, Malik Raoulda and 12 other people have particularly liked this photo
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J. Gafarot club has replied to Ulrich John clubThrough more than 60 years visits to this place (beach) it is my first encounter with such species.
They are similar to one Greek species and IMHO that means...waters are warmer.
Thanks for the info.
J. Gafarot club has replied to Jaap van 't Veen clubGlad to know that following your steps, even in a small scale, it helps those interested.
Have a nice day.
J. Gafarot club has replied to Xata clubhomenagem à rainha Carlota de Mecklemburgo-Strelitz, bolas !
Xata club has replied to J. Gafarot clubTiraste fotos com ela depois? Saíram bem?
Un abrazo Jose!
J. Gafarot club has replied to Diana Australis clubJ. Gafarot club has replied to Marie-claire GalletÇa me fait plaisir de savoir que tu trouves aussi ces animaux tout à fait uniques !
Admired in:
www.ipernity.com/group/tolerance
J. Gafarot club has replied to William Sutherland clubJ. Gafarot club has replied to RHHHave a nice evening
J. Gafarot club has replied to ╰☆☆June☆☆╮ clubHave a wonderful day, now !
www.ipernity.com/group/nous.-nature
NATURE et Biodiversité..!
J. Gafarot club has replied to Malik Raoulda clubBonne journée.
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