Species Spotlight : Atlantic Bottlenose Dolphin
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Inshore dolphins live in small social groups of approximately 10 individuals; while offshore dolphins form larger groups of 10-100 individuals. Dolphins travel about their home ranges (the geographical area that defines their home) in groups of 4-7 in shallower waters and more than 20 dolphins in deeper areas. The dolphins interact and re-form groups at will, somewhat like a kaleidoscope.
Dolphins are often heard clicking. Contrary to popular thought, clicking is likely not communication, but rather the sonar system dolphins use for navigation, food-finding and avoidance of predators. Clicks are one of three classes of sounds dolphins produce, in addition to squawks (whose purpose is unknown, although these sounds are made while dolphins are socializing), and pure tones, one of which is known as that dolphin's "signature whistle."
Dolphins cooperate in many ways, some species more than others. As a group they may guard against predation by sharks or support a sick or injured community member in the water by keeping it afloat. A few dolphins sometimes use the lengths of their bodies to encircle and pen a school of fish in shallow water, like horses rounding up yearlings, in order to feed. In addition, bottlenose dolphins often take turns feeding according to age, size, and health. Often two males of the same age form a lifelong pair bond and spend the majority of their time together, helping each other find suitable food and mates.
Dolphins have been known to live into their fifties, and reach weights of up to 140-650kg.
Where you can find Atlantic bottlenose dolphin
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