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Rhinoceros dolphin

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Painted illustration: dolphin with two dorsal fins in Pacific waves
AI rendition based on witness descriptions, not an actual photo.
An 18th-century drawing of an unknown marine mammal said to have washed up near Licata, Sicily, in September 1741.
An 18th-century drawing of an unknown marine mammal said to have washed up near Licata, Sicily, in September 1741 · Antonio Mongitore · Public domain (via Wikimedia Commons) · Image source
The 'rhinoceros dolphin' as pictured in an 1837 natural history book; science does not recognize the species.
The 'rhinoceros dolphin' as pictured in an 1837 natural history book; science does not recognize the species · William Jardine · Public domain (via Wikimedia Commons) · Image source

A dolphin with a second dorsal fin reported by French naval surgeons in 1819.

Open Verdict: Rhinoceros dolphin remains unconfirmed: the record is reports, with no specimen or verifiable photo.

Region
Oceans · Pacific Ocean
First reports
19 October 1819

Key sightings

Best evidence

Formal description, no specimen.

Sources