The head of Dolphins have changed over the years as well; it has grown larger which shows that the lower jaw emerged. It ranges to the middle ear and this helps dolphins to be able to hear as well as to use echolocation. It’s believed that during the early Miocene period, the use of echolocation was developed in the form that dolphins depend on on it today. The early dolphins were smaller and believed to have consumed small fish as well as various organisms in the water. Researchers have carefully examined the bones of the fins for dolphins.
Scientific Classification: Order & Genus. The scientific order of all types of whales is Cetacea. This large order is broken down into three further groups as well: the toothed whales or Odontoceti, which includes killer whales, dolphins, porpoises, beluga whales, and sperm whales, the baleen whales or Mysticeti, which include blue whales, humpback whales, gray whales, and right whales, and the Archaeoceti order, which are all now extinct. The genus of these species is Orcinus orca. Family.
December 1, 2011 Paul Guernsey College Composition Final Conservation of the Bluefin Tuna Bluefin Tuna, or Thunnus thynnus by its Latin name, is one of the largest, fastest swimming, and beautifully colored fish in the entire ocean. Their coloring is made to camouflage themselves from both above and below with metallic blue on top and shimmering silver-white on the bottom. Their bodies are torpedo shaped and built for speed and endurance while hunting for food, or being hunted (National Geographic). bluefin Tuna are prey only to some marine life such as, some whale, shark, and marine mammal species. With highly migratory species like bluefin tuna, management is complicated because these species migrate thousands of miles across oceans and international borders and are fished by many nations.
Kayaks we first made from wood or whale bone shaped and covered with seal skin or other animal skins. Kayaks were first used in hunting scenarios when the Inuit would go out and kill whales and other sea life. The traditional kayak has a covered deck with cock pits to sit in. Kayaks sometimes have one or two cockpits for the holding an additional passenger or transporting equipment and goods. The cockpits are sometimes covered up by a spray deck commonly called a spray skirt; the spray skirt prevents the entry of water coming in the boat when you are in powerful waves and currents.
Adult sea turtles can weigh from 150-1000 pounds. Depending on the type of sea turtle, they can live from 50 to 80 years in the wild. They live all over the world with some preferring the tropical waters and others prefer to be where it is cooler. Threats to sea turtles today include the harvesting of their eggs for human consumption, entanglement and entrapment in fishing gear, ingestion of litter, and coastal development. Sea turtles mature at around age 30.
The buoyancy allows the cuttlefish to hover over the floor of the oceans. The siphuncle is highly modified, running on the ventral side of the shell. Although the cuttlebone is unique to the cuttlefish, it does have a minor set back. Between the depth of 200 and 600 meters the cuttlebone can implode. Because of this factor cuttlefish have adapted to the seafloor in shallow marine waters as their habitat.
Some like cold and deeper water than others. dolphins have a similar streamlined, torpedo-shaped body - their bodies are larger at the front than at the back. The dolphin has a short, stiff neck. The forelimbs have developed into paddle-shaped flippers, which helps in steering through water. The tail of a dolphin (called the fluke) is used for propulsion: it is therefore very muscular.
Snappers are important food and game fishes, and several species have been introduced into non-native waters. For this experiment, we had examined the Big-blue eye snapper. The colour of entire body was reddish, with a series of short, irregular lines on its sides, diagonal blue lines formed by spots on the scales above the lateral line, sometimes with yellow streaks below the lateral line, large canine teeth absent, orientation of mouth and eye give it the appearance of looking upward, and no dark lateral spot. This fish has the forked caudal fin. The caudal fin is the tail fin, located at the end of the
Olive Ridleys get their name from the coloring of their heart-shaped shell, which starts out gray but becomes olive green once the turtles are adult. Hatchlings are dark gray with a pale yolk scar, but appear all black when wet. Carapace length ranges from 37 to 50 mm. Olive Ridleys are omnivorous, meaning that they consume a varied diet from both plant and animal sources. Distribution Although Olive Ridleys spend time in the open ocean, they also forage in coastal waters and estuaries.Olive Ridley turtles are found only in warmer waters, including the southern Atlantic, Pacific and Indian oceans.
Gulper (Eurypharynx pelecanoides): Also known as the "umbrellamouth gulper" or "the pelican eel," this fish can greatly expand its hinged jaws to engulf fishes and deposit them in its pouch-like lower jaw. These fish grow up to 2 feet long, including their whip-like tail , and live in depths greater than 6,500 feet. Anglerfish (Melanocetus johnsoni): This fish is very round shaped with a large mouth. Nicknamed the "black whale" or "common black devil," its ferocious appearance is deceiving, since it can only reach a maximum length of 5 inches. Viperfish (Chauliodus sloani): Its lower fangs are so long that they don’t even fit in its mouth!!