A biological clock triggers bioluminescence in the dinoflagellate Pyrocystis fusiformis. At dusk, cells produce the chemicals responsible for its light. Credit E. Widder, ORCA, www. Bioluminescence is found in many marine organisms bacteria, algae, jellyfish, worms, crustaceans, seastars, fish, and sharks to name just a few. In some cases, animals take in bacteria or other bioluminescent creatures to gain the ability to light up. For example, the Hawaiian bobtail squid has a special light organ that is colonized by bioluminescent bacteria within hours of its birth. But usually the animal itself contains the chemicals necessary for the reaction that produces bioluminescence. Animals On The Other Side Of The Ocean' title='Animals On The Other Side Of The Ocean' />Theres plenty of time for a dolphin to catch a catnap between trips to the ocean surface, of course, but this isnt a viable option. When youre a conscious. Echinoderms are radially symmetrical animals that are only found in the sea there are none on land or in fresh water. Echinoderms mean spiny skin in Greek. Everyone knows that parrots can mimic human speech. So can a few other birds, including ravens and starlings. But its not just birds that speak up. Here are a few. The number of species that bioluminesce and the variations in the chemical reactions that produce light are evidence that bioluminescence has evolved many times overat least 4. How To Add Sata Drivers To Windows Xp Installation Step more. Most deep sea animals produce some bioluminescent light, but the phenomenon isnt relegated to the deep one of the most common sightings occurs at the surface of the ocean. Many small planktonic surface dwellerssuch as single celled dinoflagellatesare bioluminescent. When conditions are right, dinoflagellates bloom in dense layers at the surface of the water, causing the ocean to take on a reddish brown color in daylight and a sparkly sheen as they move in the waves at night. When the dinoflagellates are poisonous to other animals, these events are called harmful algal blooms HABs. When theyre eaten, the toxic dinoflagellates accumulate in high concentrations in larger fish and filter feeding shellfish. And then when marine mammals or people eat these organisms, it can cause sickness or even death.
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