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Hace 5 días · No lungs, no heart and no brain. The jellyfish is a very ancient marine animal. Fossils dating back 600 million years have been discovered in Australia. Some of the footprints left correspond to the ancestors of jellyfish known as Ediacaria. Jellyfish are all distinguished by their lack of heart, brain and lungs!
Hace 4 días · Ocean Facts. Jellyfish are among the coolest sea creatures. Even though they have a fairly simple body structure, they’ve got lots of unique characteristics. Did you know that jellies are 95% water? They have no blood, brains, and heart. How’s that for an initial set of jellyfish facts! On the flip side, what they do have is a lot of venoms.
Hace 1 día · The molecule’s natural cone shape resists those compacting forces just enough for pressure-adapted membranes to stay in a “Goldilocks zone” of fluidity, Budin explains. That adaptation has evolved at least three separate times in the group of jellyfish studied, the scientists say. Bartlett wouldn’t be surprised if further research ...
Hace 5 días · The evolution of jellyfish is a testament to the remarkable adaptability of life in Earth’s oceans. From their ancient origins to their present-day diversity, jellyfish have undergone a journey shaped by millions of years of environmental change.
Hace 2 días · How Delicate Comb Jellies Withstand Crushing Depths—But Melt Away on Land. Scientists finally know how a gelatinous deep-sea creature keeps its cells from paralysis under pressure. Comb jellies ...
Hace 2 días · First things first: although comb jellies look like jellyfish, they are not closely related. Comb jellies comprise the phylum Ctenophora (pronounced tee-no-for-a). They are predators that can grow as large as a volleyball and live in oceans all over the world and at various depths, from the surface all the way down to the deep sea.
Hace 2 días · Lion’s mane jellyfish (Cyanea capillata) Lion’s mane are large and have a large reddish brown, umbrella-shaped bell with a mass of long, thin hair-like tentacles, as well as short, thick, frilled and folded arms. Size: usually 50cm, but can reach 2 metres in diameter. Sting: Be very careful, this jellyfish stings.
