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IUCN threat status:

Vulnerable (VU)

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Biology

The Atlantic humpbacked dolphin is a slow swimming species, which typically moves at about five kilometres per hour, surfacing briefly every minute or so. Typically occurring in groups of four to seven individuals, the Atlantic humpbacked dolphin, unlike many other dolphins, will avoid boats and is rarely seen bow riding (2). Humpbacked dolphins are known to feed on fish, including bream, mullet and herring, and cephalopods. Off the coast of Senegal, the Atlantic humpbacked dolphin has been observed moving inshore with the incoming tide to feed on prey within mangrove channels, and then returning to the ocean as the tide retreats (2). It is thought to use echolocation when foraging; a series of clicks are produced which reflect off objects and help the dolphin locate its prey in the often murky habitat. This dolphin may also emit whistles and screams, vocalisations which may be important in communication with other dolphins (2). Very little is known about reproduction in this dolphin; breeding has been recorded in March and April, and the calves are thought to be about one metre long at birth (2).

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Source: ARKive

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