Amy Whalley

Amy Whalley

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Soft coral close-up of Plexaurella slit pore sea rod gorgonian coral with open polyps

Soft coral close-up of Plexaurella slit pore sea rod gorgonian coral with open polyps

Een spons heeft een eenvoudige bouw, het is een holle buis. Aan de ene kant  heeft de spons zich vast gemaakt aan de grond en aan de andere is die open. Het bovenste deel (wat open  is) noemen we het osculum.

Though plant-like in appearance, sponges are actually one of the most primitive animals in the sea. They belong to a group called porifera and can be found in an infinite variety of colors and shapes.

From Wikipedia - The siphonophores, are an order of the Hydrozoa, a class of marine invertebrates belonging to the phylum Cnidaria. Although a siphonophore appears to be a single organism, each specimen is actually a colony composed of many individual animals. Some siphonophores superficially resemble jellyfish, like the dangerous Portuguese Man o' War (Physalia physalis). With a body length of 40–50 m, another species of siphonophore, Praya dubia, is one of the longest animals in the world.

Related to the jellyfish and corals, Siphonophore is a continuous chain of specialized polyps - individual animals that grow from one another in an organized colony. Some in the colony are devoted to feeding, armed with stinging cells to snag fish or in