A short-beaked common dolphin has been lurking alone on Big Manly beach since Wednesday evening.
Common dolphins are an abundant, protected species and prefer swimming a few kilometres from the shoreline. They are especially common in the Hauraki Gulf.
Marine mammal rescue organisation Project Jonah believed the male dolphin was unwell given its unusual swimming behaviours. It wasn't normal for dolphins to be separated from their pod.
"We'd like people to respect its space. If it approaches, stay in the shallows or get out of the water," general manager Daren Grover said.
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