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Dec 13, 2019 · Jellyfish come in a wide variety of shapes and sizes. The largest is the lion's mane jellyfish (Cyanea capillata), which can have a bell over six and a half feet in diameter and weigh up to 440 pounds; the smallest is the Irukandji jellyfish, several species of dangerous jellyfishes found in tropical waters, which measure only about two-tenths of an inch and weigh well under a tenth of an ounce.
Dec 3, 2020 · The Basics. Jellyfish, also known as jellies, are fascinating animals that spend their lives floating in the oceans. Unlike their name suggest, jellyfish are not really fish as they lack a backbone. In fact, these animals are actually invertebrates and they are more closely related to corals, sea anemones, and sea whips than fish.
An adult jellyfish is a medusa (plural: medusae ), named after Medusa, the mythological creature with snakes for hair who could turn humans to stone with a glance. After the male releases its sperm through its orifice into the water, the sperm swim into the female's orifice and fertilize the eggs.
Jellyfish. Jellyfish are animals of the phylum Cnidaria. They are a monophyletic clade, the Medusozoa. [1] Most of them live in the oceans, in salt water, where they eat small sea animals like plankton and little fish, and float in the sea. Only a few jellyfish live in fresh water. They have soft bodies and long, stinging, venomous tentacles ...
Jellyfish stings can be painful to humans and, from certain species, they can even be deadly. Although these magnificent marine creatures don’t purposely attack humans, most stings occur when people accidentally touch a jellyfish. Picture credits Bioflourescent jellyfish: Getty Images UK. Close-up of purple jellyfish: Bruce H. Obison.
Jellyfish reproduce and move into new niches so rapidly that even within 40 years, some experts predict “regime shifts” in which jellyfish assume dominance in one marine ecosystem after another.
Sep 29, 2023 · Matthew Beach. Although scientists have argued technology can damage people’s relationships with other animals, it can help us reconnect with our environment too. Because jellyfish are 95% water ...
