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Marine Science


             creases helping the hammerhead to feed. It is also believed that the hammerhead may be able to use the Earth's magnetic field as a source for navigation. Some hammerheads migrate a lot and may rely on this built in compass sense to guide them in the open ocean. Another use for the hammer is to enhance maneuverability. The hammer's similarity to a hydrofoil seems to explain its usefulness for maneuverability and improved lift. However, this theory has not been tested. Sharks generally have a small brain in comparison to their body weight. Among sharks hammerheads have a relatively large brain-body weight ratio. Sharks differ form most other fish in several ways. Sharks have a boneless skeleton made of cartilage that is a tough elastic substance. Most sharks have a rounded body shaped like a torpedo. This shape helps them swim efficiently. Hammerheads are especially good swimmers because of the hydrodynamic function of their head. All sharks are carnivorous. Most eat live fish, including other sharks. Most sharks eat their prey whole, or tear off large chunks of flesh at a time. They also eat dying animals. Hammerheads have definite food preferences. Their elongated head may help them locate the prey they prefer. The Great Hammerhead likes to eat stingrays. This was observed when the stomach contents of a hammerhead were examined and stingray spines were found. Stingrays are usually difficult to detect because they are partially buried in the sediment. Yet, the hammerhead is capable of finding them because they can swim close to the bottom swinging their heads in a wide arc like a metal detector. Sharks reproduce internally. Unlike most fish sharks eggs are fertilized internally. The male shark has two organs called claspers which release sperm into the female where it fertilizes the egg. In many sharks the eggs hatch inside the female, and the pups are born alive. Other species of sharks lay their eggs outside.


Essays Related to Marine Science

1. History of the Marine Corps

The real answer to the question is, a Marine and his rifle. ... Back then, they weren't called the Marine Corps just yet, they started off as the Continental Marines. ... In an article by the U.S Navy, Tactics is described as "the are art and science of winning engagements and battles. ... Discipline is a key part of being a Marine. ... The Marines can't always patrol on foot in wars and battles. ...

  • Word Count: 1159
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2. career of marine biology

Marine biology is the field of study concerned with ocean life in all of its biological manifestations. ... Marine biologists identify, catalogue, and analyze different kinds of sea life. Marine biologists often use computers and statistical analysis in their research. ... Since marine biology is a combination of many life sciences, the more specialized training or experience one has, the more competitive one becomes. ... Most marine biologists work around the water on the docks or on boats researching marine life. ...

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3. Interpreting science in a new way

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4. Should Women Enter the Militar

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  • Word Count: 1394
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5. "Sex, Drugs, Disasters and the Extinction of Dinosaurs" by S

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6. Action

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7. My Personality - Who I Am

All my first-rated projects for the Science Fairs, which I used to coordinate, were based on this vital theme. ... I was once honored to be amongst a renowned group of local conservationists on a weeklong tour, dubbed the Dugongs Festival week, to preserve marine-life. At another time too, I was the only student representative at an international seminar on marine conservation where I managed to put in quite a number of good words for my fellow youths and their vital role in conservation. ...

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8. My Trip To The Museum

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9. Education And Financial Responsibility

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