Manta rays Research Paper Example | Topics and Well Written Essays - 1250 words

gray whale rays - Research Paper ExampleThis huge ray has an incredibly slow growth rate, which presents a real problem for their attempt population. Interactions with people can be destructive for Manta birostris because of this, for many fishermen utilize them for their fins and meat. The fate of the devilfish ray is undecided, and relies almost entirely on the human race. As manta rays move through their aquatic environment, they process information through many different sensory channels allowing for a complex repertoire of signals and behaviors to be used for finding food, mates, escaping predators, and to facilitate social interactions with conspecifics. (Deakos,M. 2011). Records state that manta rays can grow anywhere from 20-30 feet in length. That is, from the tip of one wing to the other. The largest batoid fish on the planet, Manta birostris has a lot to live up to. It does this just fine by not only existence the largest of its value, but by also being one of the lar gest fish in the worlds oceans. Their color can vary from shades of green to pure black. Each individual has mottles and spots around the abdominal atomic number 18a, and the shades of solid color can vary everywhere the head and back of each animal. Their underbellies are pale, ranging from white to off-white, which makes the black speckles and mottled dots easily to distinguish. Biologists use these speckles and spots in order to identify each manta ray, and have a catalogue of individuals. Wounds and scars are also occasionally used, but afterwards 12 months many of these heal. Chunks out of wings or other missing parts are better to use as an identification tool. Aside from their coloring, manta rays have a long tail that grows thinner and thinner until it reaches the tip. Their tails are whip-like at the end and have a shorter length than that of their body. A manta rays tail is harmless, however, and has no spines or stingers. The tails, while short, are thought to help i n direction, like a rudder on a ship. On the other side of their body, inside the mouth, both male and female manta rays have 300 rows of tiny teeth. The teeth have flat tops and edges, and are not used in feeding. Manta rays are filter feeders, and have no reason to chew their food. What the teeth are used for has been a throw topic for biologists all over the world. Because so little is known about the manta ray, even small things such as teeth remain a mystery. One theory is that they are used in combat by males and females alike. Combat can mean anything from defending territory to defending a mate. Manta birostris is found in all the worlds oceans. These include the Pacific, the Atlantic, the Artic, the Southern, and the Indian oceans. How many and what species occur in what oceans has yet to be discovered. There could well be even more species of manta ray that havent been discovered yet. Despite their gigantic size, manta rays prefer shallower inshore waters close to reefs a nd highly strung areas as opposed to the deeper parts of the oceans. They use the more open areas of these shallower places to gracefully glide through the water. Some species of ray may travel into the depths in order to migrate, although evidence of this fact is scattered and not well documented. What little documentation there is, however, is very valuable. An analysis of 79 underwater photographs of Manta birostris gathered over a period of nine years in a marine protected area suggests a high predictability of manta ray occurrences in the neighborhood during the austral winter