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Common Bottlenose Dolphins are marine mammals native to tropical and temperate oceans all around the globe. They're grey in colour with a light grey underside. On average, they're two to four meters long and weigh 200-600 kilograms. Dolphins living near the coast are on the smaller side while the ones off-shore are larger. Their diet consists of shrimps, fish and squids. Dolphins live in groups called pods of around 10-15 individuals and periodically form groups of up to a thousand individuals. The pods are tightly-knit families which hunt together, play together and raise their young together. Males reach sexual maturity between 8-13 years of age while females do between 5-13 years and usually have their first offspring between 8 and 10 years old.

Bottlenose Dolphins use a variety of ways to communicate and play with each other. They can make a variety of sounds to communicate with each other or detect prey through echolocation. They're chasing and throwing objects at each other to practice catching prey. While they ocassionally hunt by themselves, they usually hunt in groups, herding schools of fish into confined space or trapping them in a corner to then charge into their prey one at a time.

The Dolphins need to breathe air so they frequently surface to exhale and inhale through their blowhole, which they close underwater. They could hold their breath for over 10 minutes, but choose not to do so and usually breathe multiple times a minute. They may even jump up to 5 meters high out of the water, though it's not clear for what purpose. They're also frequently seen riding the wake of boats, to the amazement of passengers.

Dolphins are highly intelligent, making them popular subjects for research. They're also very capable and eager to learn; they imitate imitate each other and so wild dolphins have been seen performing tricks, such as tail-walking, they learned by observing formerly captive dolphins released back into the wild. In some areas, dolphins and humans have formed mutually beneficial bonds where the dolphins would drive the fish toward fishermen and eat the fish that would subsequently try to escape the fishing nets.