Marine Biology
Summary of Films
Film # 1 is called The Open Ocean. In this film, the author takes a look at the pacific. It says that the Mariana Trench (7 miles deep) is the deepest place on earth. The highest mountains of the world are located there. In shallower waters, there is much life. Photosynthetic organisms are the basis of all life in the sea. Also, some animals such as the sea anemones and the sea cucumbers allow currents to carry particles to them, and some creature pulse to deliver oxygen to their bodies, an example could be the coral polyps.
As the movie shows, the ocean has acquired a population of immense diversity.
The biggest of all fish is the whale shark (50 feet long).Sharks evolved 400 million years ago. But, the fish that dominates the sea today is the Bony fish. They have bone, swim bladder and paired fins. They can swim as fast as 70 miles per hour. In addition, 10 million years ago mammals invaded the sea and became streamlined. Dolphins and killers whales were......
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