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A cnidocyte (also known as a cnidoblast) is an explosive cell containing one large secretory organelle called a cnidocyst (also known as a cnida (pl.: cnidae)) that can deliver a sting to other organisms. The presence of this cell defines the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). Cnidae are used to capture prey and as ...
A cnidosac is an anatomical feature that is found in the group of sea slugs known as aeolid nudibranchs, a clade of marine opisthobranch gastropod molluscs. [1] A cnidosac contains cnidocytes, stinging cells that are also known as cnidoblasts or nematocysts. These stinging cells are not made by the nudibranch, but by the species that it feeds upon.
These nudibranchs eat stinging celled animals such as anemones, hydroids and sea fans or Portuguese men o' war. The stinging cells or nematocysts are passed unharmed through the digestive system to cnidosacs at the tips of the cerata. Here the nematocysts mature and are then used by the nudibranch for its own defense.
Scyphomedusae are found throughout the world's oceans, from the surface to great depths; no Scyphozoa occur in freshwater (or on land). As medusae, they eat a variety of crustaceans and fish, which they capture using stinging cells called nematocysts. The nematocysts are located throughout the tentacles that radiate downward from the edge of ...
The cerata are also extensions of the digestive system, and are used to store the stinging cells of the anemones and fan-like hydroids they eat. The red rhinophores are sensory structures used for detecting the presence of possible mates and prey. The purple, red, and orange colors are derived from a single carotenoid pigment, astaxanthin. The ...
LuLu Group International is a multinational conglomerate company that operates a chain of hypermarkets and retail companies, headquartered in Abu Dhabi, United Arab Emirates. It was founded in 2000 by M. A. Yusuff Ali from Nattika in Kerala , India .
STR, Inc. is a subsidiary of CoStar Group that provides market data on the hotel industry worldwide, including supply and demand and market share data. The company has a corporate headquarters in Hendersonville, Tennessee, an international headquarters in London, England and offices in Italy, Dubai, Brazil, Singapore, Tokyo, Jakarta, Sydney, and Beijing.
"Mushroom cap jellyfish" and "sea mushroom jellyfish" are common names for the rare Rhopilema verrili. Their common name refers to the shape of the medusa, which resembles a mushroom cap. Rhopilema verrilli, originally Nectopilema verrilli , was named by Fewkes (1887) after a specimen found in the New Haven Harbor of Connecticut.