The bottlenose dolphin is an interesting type of dolphin because of its unique characteristics. The bottlenose dolphin, or Tursiops, lives in shallow areas of the ocean, such as the continental shelf near the beach. Bottlenose dolphins are a type of dolphin that live in the ocean because there are tons of different types of dolphins. Bottlenose dolphins live in the Pacific Ocean and the Arctic Ocean because they have warm blubber to keep them warm in the north. Although bottlenose dolphins live primarily in the Pacific, they also live in other southern locations (Sea World). Bottlenose dolphins have many different characteristics and physical characteristics. Bottlenose dolphins can reach 7 to 12 feet long. Male bottlenose dolphins are generally larger and heavier. Coastal dolphins can weigh between 420 and 570 pounds and non-coastal dolphins can weigh more. Dolphins' skin is very smooth and has no hair or sweat glands, which prevents them from cooling off. Dolphins are built to be able to swim at high speeds through water and have much less drag than humans. Dolphins have dorsal fins that allow them to move through water very quickly and move across water. Dolphins breathe through a blowhole, but unlike humans, dolphins' blowholes have a flap that opens when they need to breathe so water doesn't come in and drown them (Sea World). Dolphins migrate because they go where their food is. Dolphins live on fish, so where the fish go, the dolphins must go, but they have different reasons for migrating. Dolphins that live in warm waters don't need to migrate as far because they don't need to follow their food as far and they don't need to migrate to keep warm because they live in warm waters. Bottlenose dolphins are not endangered but may become so. The... middle of paper ... they have a drag-free shape and can pass through water very quickly (Monterey Bay Aquarium). Bottle-nosed dolphins can dive up to 150 feet to get their food, but it really depends on where they live and in what ocean. When a dolphin dives, its heart and brain are supplied with more oxygen and blood than the tissues or any other part of its body. Dolphins have a slower heart rate when diving, so they cannot dive as deep and as fast as other mammals. When human divers dive into deep places, they have to ascend slowly, otherwise their gases in their body will form bubbles that are very painful and called bends, but dolphins or any other marine mammals do not understand bends. Dolphins have a very stable body temperature, usually 96 degrees. Dolphins can be in very cold waters and not die due to their skin and tissue covering their bodies (Monterey Bay Aquarium).).