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The hydroid colony, whose polyps can range from bright blue turquoise to yellow; the polyps resemble the tentacles of jellyfish. [10] [11] [full citation needed] Each strand has numerous branchlets, each of the knobs of stinging cells called nematocysts terminates at the distal end. The blue button has a single mouth located beneath the float ...
Porpita is genus of hydrozoans in the family Porpitidae. It has two species recognized and is the type genus of its family. [1]Porpita is in the phylum Cnidaria.Similar to the well-known Portuguese Man-of-War, species in this genus consist mainly of colonies of hydrozoans, linked to a biological float, keeping them near the surface.
The bulbs on its tentacles are less pronounced and more “club-shaped.” A Zancleopsis grandis, or large Zancleopsis jellyfish, with its body and tentacles pulled together. Photo from Schuchert ...
Velella velella on the southern coast of Sicily. The tiny individual animals are specialized to perform specific tasks; some form the central gas-filled disc (which is a golden brown colour and hardened by chitinous material) essential to keeping the colony afloat; others form radiating tentacles for tasks such as catching prey, reproduction, and digestion.
The St. George’s cross medusa jellyfish is considered “large,” measuring about 4 inches wide and about 3 inches tall, the study said. It has a circular body shape and about 240 tentacles.
Blue gelatinous creatures known as by-the-wind sailors often wash up on California beaches by the thousands in the springtime when the ocean warms. Blue jellyfish-like critters arrive in Bay Area ...
The deep blue, by-the-wind sailors that are recognized by many beach-goers are the polyp phase of the life cycle. Each "individual" with its sail is really a hydroid colony, with many polyps that feed on ocean plankton. These are connected by a canal system that enables the colony to share whatever food is ingested by individual polyps.
Now, the mystery is solved: it is a placental jellyfish -- after many ... The fish's species was, at first, hard to identify because it appeared to have no eyes, mouth, tentacles, front or back.