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Every morning, jellyfish swim towards the surface of the water to reach the sunlight. Not only do they love sunlight, but they need it to survive. They feed off the algae that grows in the lake
Cubozoa is a group commonly known as box jellyfish, that occur in tropical and warm temperate seas. They have cube-shaped, transparent medusae and are heavily-armed with venomous nematocysts. Cubozoans have planula larvae, which settle and develop into sessile polyps, which subsequently metamorphose into sexual medusae, [ 11 ] the oral end of ...
Jellyfish Lake in Palau is filled to the brim with golden jellyfish -- and instead of avoiding the creatures, brave travelers flock to join them. English teacher John Hawkins got the opportunity ...
Upon reaching adult size, jellyfish spawn regularly if there is a sufficient supply of food. In most species, spawning is controlled by light, with all individuals spawning at about the same time of day; in many instances this is at dawn or dusk. [66] Jellyfish are usually either male or female (with occasional hermaphrodites).
Lion's mane jellyfish swimming, side view. Human encounters with the jellyfish can cause temporary pain and localized redness. [18] In normal circumstances, however, and in healthy individuals, the stings of the jellyfish are not known to be fatal; vinegar can be used to deactivate the nematocysts. If there is contact with a large number of ...
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The spotted jelly (Mastigias papua), lagoon jelly, golden medusa, or Papuan jellyfish, is a species of jellyfish from the Indo-Pacific oceans. Like corals, sea anemones, and other sea jellies, it belongs to the phylum Cnidaria. Mastigias papua is one of the numerous marine animals living in symbiosis with zooxanthellae, a photosynthetic alga. [2]
As a guideline, nekton are larger and tend to swim largely at biologically high Reynolds numbers (>10 3 and up beyond 10 9), where inertial flows are the rule, and eddies (vortices) are easily shed. Plankton, on the other hand, are small and, if they swim at all, do so at biologically low Reynolds numbers (0.001 to 10), where the viscous ...