Echolocation in Marine Biology

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Marine mammals such as dolphins and fish each have a frequency unique to each species, as well as each organism, in a pod.(Baker, 2013) Scientists have called these “signature whistles” Elsevier, 1989). Organisms use these whistles similar to how we use names, associating the frequency to specific individuals in the pod. Whales have a frequency between 40-80 kilohertz while dolphins at about 3-23 kilohertz. Due to the sound differences, organisms are able to distinguish between organisms of different species and individuals in their pods, or neighboring pods. If individuals of a species are capable of individualising their “signature whistles” are they able to then use those signature whistles to develop ways of hunting fish using each of the individuals in the pod? Scientists have been studying this behavior since the 1960’s, and have just recently discovered a whale who’s whistle sounds like a duck call (Kahn, 2014). In Between all matters of life, communication between organisms of like species has been an important part of survival, for so long, and so perfect, that whales have not substantially evolved for about 33 billion years (Uhen, Mark). For example, dolphins hunt using a technique called ‘herding’,as well as many other techniques, which involves members of a pod circling a group of fish and through a series of yips, chirps, whistles, communicate to each other as they in circle their prey into a tightly packed group, allowing one dolphin at a time to swim through the group of fish while the other members of the pod incircle the fish. It is more efficient for groups of a like species to hunt together than one at a time (Bone, 2014). The herd will continue to do this until all have fed, or until the resourc... ... middle of paper ... ...en information. With the use of echolocation, whales and dolphins can communicate between individuals, hunt, navigate, and visualize their surroundings even though they can’t always see it. An organisms ability to adapt and survive and environment is known as fitness, and has been perfected by whales in such a way that they haven’t significantly evolved for about 33 million years. Scientists have been using this extraordinary sense of communication, and depiction to identify in humans, specifically blind humans, the ability to use this advanced method of environmental depiction, and how they have used it to not only see their surroundings, detect movements in surroundings, and use this skill not only to navigate by walking, but even use this to depict what their entire environment looks like, what it contains, and what materials are present in the environment.

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