The Atlantic white-sided dolphin is a large, robust species (4), which is easily recognised by the obvious yellow patch towards the rear of the flanks (2). The common name refers to the pale band on each side situated below the dorsal fin (2). This species is often confused with the white-beaked dolphin, but the Atlantic white-sided dolphin has a much darker back (5). It may also be confused with the common dolphin because of the similar pattern (grey, white, black and yellow), but it lacks the distinctive hourglass pattern (6).
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