Bottle nose Dolphins

-kirstyn goffinet

Description

ottlenose dolphins get their name from their stubby snouts, Their sharp teeth serve for grasping rather than for chewing because bottlenose dolphins swallow their food whole. Their eyes are on each sides of their heads, On the top of their heads, bottlenose dolphins have blowholes, which they close with a muscular flap when they go underwater and open when they come up. finally, A bottlenose dolphin's smooth, sleek body is suited to swim better through water.

More description

Mature, he reaches a length of 8 to 12 feet and weighs between 400 and 600 pounds. The skin feels rubbery to the touch. Instead of grey like the rest of its body , it has a faded white on its belly and lower jaw. On each side of his body, a bottlenose dolphin has a flipper that is about 12 to 20 inches long. The tall, sickle-shaped dorsal fin, which sits on the center of the dolphin's back, helps in maintaining balance while the dolphin is swimming. The tail fins, help propel the dolphin through the water.

Evolution

Around 50 million years ago, some four legged land creatures started spending more and more of their time in water. one animal that there are fossil records of from around this time named pakicidae were four legged creatures. For some reason, hanging around water all the time caused them to start to evolved. as they slowley evolved, their bodies changed so much that they lost the ability to move onto the land. An interim stage in this development is represented by the protocetids (the evolved pakicidae) years after it evolved into the first aquatic form are the Durudon and the 60 foot long Basilosaurus (like a whale). after that came the dolphin.
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Characteristics

Dolphins are really social animals, dolphins live together in groups. These groups can contain up to 100 dolphins. Members of a group form strong bonds with each other and will help out sick or injured dolphins, working together to protect the group. Groups of dolphins have even been known to kill sharks that are threatening them. These playful creatures will often chase one another or throw found items back and forth as a game! Dolphins are very they have extremely large brains compared to their size. It has been observed that they enjoy problems and quickly lose interest in boring activities or tasks. Dolphins have a large memory, and they can follow complicated instructions and recognize the difference between shapes, materials and colors! Dolphins are one of very few species who can recognize their own reflection in a mirror.

Why did I pick this animal?

I picked do do a bottle nosed dolphin because I was curious about what it once started out as. I also really enjoy dolphins and have seen them a lot when I go on vacation, I asleep went swimming with them and I really enjoyed it and wanted to know more about them(: