Jellyfish

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jellyfish : the typically free-swimming, bell-shaped, usually sexually-reproducing solitary or colonial form of a cnidarian in which the whorls of tentacles lined with nematocysts arise and hang down from the margin of the nearly transparent, gelatinous bell — Merriam-Webster See also OneLook

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Encyclopedia

Jellyfish or sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a few are not mobile, being anchored to the seabed by stalks. The bell can pulsate to provide propulsion and highly efficient locomotion. The tentacles are armed with stinging cells and may be used to capture prey and defend against predators. Jellyfish have a complex life cycle; the medusa is normally the sexual phase, the planula larva can disperse widely and is followed by a sedentary polyp phase. — Wikipedia

Jellyfish (Encyclopædia Britannica)

Medusozoa is a clade in the phylum Cnidaria, and is often considered a subphylum. It includes the classes Hydrozoa, Scyphozoa, Staurozoa and Cubozoa, and possibly the parasitic Polypodiozoa. Medusozoans are distinguished by having a medusa stage in their often complex life cycle, a medusa typically being an umbrella-shaped body with stinging tentacles around the edge. With the exception of some Hydrozoa (and Polypodiozoa), all are called jellyfish in their free-swimming medusa phase. — Wikipedia

Medusozoa (Encyclopædia Britannica)

Jellyfish (One Zoom)
Medusozoa (WolframAlpha)

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Science

Cnidariology is the subdiscipline of Zoology that consists of the study of Cnidaria. — Wikipedia

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Library

DDC: 593.8 Jellyfish (Library Thing)
Subject: Jellyfish (Library Thing)

Subject: Jellyfish (Open Library)

LCC: QL 380 Jellyfish (UPenn Online Books)
Subject: Jellyfish (UPenn Online Books)

LCC: QL 380 Jellyfish (Library of Congress)
Subject: Jellyfish (Library of Congress)

Subject: Jellyfish (WorldCat)

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Jellyfish (Biology4Kids)

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Jellyfish (USA.gov)

More News …

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New research unlocks medical potential of...
on November 24, 2023 at 3:00 pm
New research by the National Physical Laboratory (NPL) and UK biotechnology company Jellagen Ltd has revealed the potential of jellyfish collagen as the foundation for a range of new medical applications and to support new biological research.
Deep-sea mining and warming trigger stress in a...
on November 21, 2023 at 4:43 pm
The deep sea is home to one of the world's largest communities of animals about which we still know very little. Yet it is already subject to a growing number of human-induced environmental pressures. How do its inhabitants respond to these stressors?
Study reveals how corals control their algae...
on November 13, 2023 at 5:01 pm
A new study, published by KAUST researchers in Nature Communications, shows that corals, jellyfish, and other symbiotic cnidarians control their symbiotic algae by limiting the amount of nitrogen available for proliferation.
Endangered sea turtles get second life at...
on November 13, 2023 at 8:39 am
A crowd has gathered to see off Rose, a loggerhead sea turtle, who labors across the Tunisian sand to rejoin the waters of the Mediterranean.
Outer Banks beaches saw a busy sea turtle nesting...
on November 6, 2023 at 12:40 pm
On the Outer Banks, 2023 nesting numbers indicate that sea turtles had a solid year.