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Glaucus atlanticus is the blue sea slug shown here out of water on a beach, and thus collapsed; however, touching the animal directly with your skin can result in a painful sting, with symptoms similar to those caused by the Portuguese man o' war The slug in the water
Although it is similar to the lion's mane jellyfish, the blue jellyfish is not as large, and has a translucent bell. [1] C. lamarckii has a blue or yellow tone and grows to approximately 10 to 20 cm (3.9 to 7.9 in) across the bell, but specimens can grow to 30 cm (12 in). [2]
Each apparent individual is a hydroid colony, and most are less than about 7 cm long. They are usually deep blue in colour, but their most obvious feature is a small stiff sail that catches the wind and propels them over the surface of the sea. Under certain wind conditions, they may be stranded by the thousand on beaches. [6]
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When this happened on the Texas Gulf coast in 1955 and 1956, it coincided with drought conditions and an associated high salinity level in the area. The jellyfish were seldom seen near the surface but small specimens were frequently taken in shrimp trawls. After gales large quantities were washed up on the beach, and after heavy rains, many ...
Porpita porpita, or the blue button, is a marine organism consisting of a colony of hydroids [2] found in the warmer, tropical and sub-tropical waters of the Pacific, [3] Atlantic, and Indian oceans, as well as the Mediterranean Sea and eastern Arabian Sea. [4]
Pelagia noctiluca is a jellyfish in the family Pelagiidae and the only currently recognized species in the genus Pelagia. [1] It is typically known in English as the mauve stinger, [3] [4] but other common names are purple-striped jelly (causing potential confusion with Chrysaora colorata), [5] purple stinger, purple people eater, [6] purple jellyfish, luminous jellyfish and night-light ...
The invasive Australian redclaw crayfish was recently spotted in Southern Texas, roughly 8,000 miles away from its home. The freshwater crustacean is indigenous to the rivers of northern Australia ...