Worldwide there are over six hundred different types of fish, not to mention three hundred species of sharks. From time to time sharks are referred to as primitive creatures. They are a prehistoric group of animals, so assuming sharks are primitive is correct. Unfortunately, this assumption is wrong. Recent offshore studies have shown that sharks are, in fact, extrem... ... middle of paper ... ...ba diving, I read countless articles about sharks, monitor shark tracking’s and even watch shark films.
The Humpback Whale, Megaptera novaeangliae, is part of the marine mammals group. They are found in oceans all over the world, they live in open waters. Even though they are mammals, they do not live on land (Monterey Bay Aquarium). Humpback whales are known for their magical song that can travel great distances. These gentle giants are omnivores, their main diet is krill.
This shark had a very unique look. Stethacanthus had a brush like decoration on the top of it’s head, and an extra fin like part that had the same bristle like decorations on it. These characteristics were thought to be used as suction cups, to hitch rides from larger fish. One of the most famous sharks that looks like an over... ... middle of paper ... ...lodon and Dunkleosteus, it left you wanting more. Mojetta and Discovery Channel makes people want to know more about the prehistoric sharks that swam the dark seas.
These species can be omnivorous, carnivorous or herbivorous, some species that live in land prefer eating green. All turtles lay eggs, which they bury in holes. They are also long-lived; some species can live for more than 100 years. Taking a more in-depth look of the sea turtles, there are 7 different types of sea turtles, such as the green, loggerhead, hawksbill, Kemp’s ridley, flat back, olive ridley sea turtles that are included in the family Cheloniidae and there are also the leatherback sea turtles, which are the only extant member of the family Dermochelyidae. They live mostly in warm and temperate seas around the world.
Like other turtles, sea turtles lack teeth. Jaw shape varies among species. Each species has a jaw shape adapted for its diet. Sea turtles, depending on the species, may eat seagrasses, algae, sponges, sea squirts, squid, shrimp, crabs, jellyfish, cuttlefish or sea cucumbers. Leatherbacks can dive to a depth of more than 1,000 meters (3,000 feet) in search of their prey, jellyfish.
The great white shark, Carcharodon carcharias, is a species of shark that exhibits both of these movement behaviors and frequently they result in shark-human interaction. The purposes and environmental implications of the local movements and migration patterns of white sharks is being researched and understood. Local movement is defined as the movement of an organism from one place to another, usually within a short distance and for short periods of time. For some animals, this involves predation or herbivory, mating, or finding resources. The local movements of White sharks have been studied by numerous people and their conclusions of their research have detailed the purposes for their movement.
There are more different types of organisms in the sea than on land, and there are a number of different environments. Large areas of the ocean floor have nothing but sand. The film talks about the cuttle fish, which bury themselves in the sand to hide from prey. Floating plankton need light to survive, so are the only found near the surface. In conclusion, the film emphasizes that the waters in the ocean are very rich.
It is a big marine reptile with bony or leathery shell, large upper eyelids, non-retractable head and powerful front flipper (Lim & Das, 1999). Sea turtles are one of the marine life which can help to maintain a healthy marine food web and are responsible for the nutrient recycle from the oceans to the beaches especially during nesting season to support the vegetation besides preventing erosion. According to Spellman (2008), the five common species of sea turtles are Leatherback turtle (Dermochelys coriacea), Kemp’s Ridley turtle (Lepidochelys kempii), Green turtle (Chelonia mydas), Hawksbill turtle (Eretmochelys imbricata), and Loggerhead turtle (Caretta caretta) (refer to Figure 1 in Appendix 1). The first type of sea turtle is Dermochelys coriacea. According to Gulko and Eckert (2004), it is the only living representative for the Dermocheyldae family.
Turtles bodies are enclosed in a shell consisting of a dorsal carapace that is attached to there spine, and a ventral plastron. Turtles walking out of there shell is a bit of a misnomer since the spine is fused the shell. Both sea turtles and tortoises can be found almost everywhere in the world, but most live in warmer regions. Leatherback, hawksbill, and loggerhead are sea turtles which are any of two families Cheloniidae and Dermochelyidae defined by feet modified into paddles for swimming. Sea turtles, as the name implies, live in the sea; however, they swim to land to lay there eggs.
The delicately balanced marine environment of the coral reef relies on the interaction of hard and soft corals, sponges, anemones, snails, rays, crabs, lobsters, turtles, dolphins and other sea life. What is a coral reef made of? A coral reef is composed of thin plates or layers of calcium carbonate secreted over thousands of years by billions of tiny soft bodied animals called coral polyps. It takes years for some corals to grow an inch and they range in size from a pinhead to a foot in length. Each polyp excretes a calcereous exo-skeleton and lives in a symbiotic relationship with a host algae, zooxanthellae, that gives the coral its color.