Group+5

This is for Group 5 - Carol-Anne's group. =__Dolphins__=

__The Dolphins' Appearance__

 * Dolphins are marine mammals that are closely related to whales.There are almost forty species of dolphin.Besides different shades of gray,there are also pink dolphins.Dolphins have fins - eg. the dorsal and tail fins which help the dolphin to balance while swimming.In many species, enlogated jaws form a beak with a curved mouth that looks like a fixed smile.Dolphins can breath through a blowhole on top of their head.Unlike most mammals,dolphins do not have hair.Dolphins can make a broadrange of soundsusing nasal airsacs located just below the blowhole.**

__Where Dolphins Live__

 * The majority of dolphin species live in oceans, from shallow coastal waters, to the deep open sea.A few species spend their lives in freshwater rivers and lakes.One of the best known species, the bottlenose dolphin, lives in every ocean in the world except the Arctic and Antarctic oceans.The pink dolphins, also known as Boto, are freshwater dolphins who live in the Amazon River.The pacific white-sided dolphins are found throughout the temperature waters of the North Pacific Ocean.**

__The Dolphins Senses__

 * The dolphin's hearing and seeing are called echolocation.The dolphin's teeth funtion as an antenna to recieve incoming sound and to pinpoint the exact location of an object.They send out clicks to give them a picture of the surroundings.The dolphin's sense of touch is from nerve endings densely packed in the skin,especially around the snout.Their sense of taste show preferences for certain kinds of fish.Scientists believe that dolphins do not have olfactory nerve that we use to smell things.If that is true,it means dolphins have no sense of smell.**

__What Dolphins Eat__

 * Dolphins use 94 sharp teeths to eat fish and crustaceans.They consume 14 pounds of fish and crustaceans a day,and 20 pounds or more in colder months.They are opportunistic feeders.They have been observed following shrimp boats to feed on the fish discarded overboard by the shrimpers.Dolphins also work together to herd fish into a tight ball,then they attack from all sides at the same time.**