Giglioli’s Whale is a marine cryptid first reported in 1867 by Italian zoologist Enrico Giglioli, who claimed to observe a strange cetacean off the coast of Chile with two dorsal fins—unlike any known whale. Later sightings by other sailors seemed to corroborate this unusual anatomy, fueling speculation that an unknown species of whale still roamed the world’s oceans. Marine biologists largely dismiss these accounts as errors born of distance, rolling seas, or perhaps glimpses of injured or deformed individuals. Nonetheless, Giglioli’s Whale continues to intrigue cryptozoologists, serving as a tantalizing reminder that even in our age of satellite mapping, the ocean remains vast enough to conceal surprises that challenge established science.
Type:Aquatic Cryptid
Location:Italy, Tuscany, Livorno coast
Traits:Double-finned, large, dark-skinned, small dorsal, broad tail
Danger Level: 3.4
First Reported: 1870s
Sightings: 1
It swims near surface kelp fields, blowing occasional spouts. Ships elicit no reaction; it continues its wide, circling patterns undisturbed.
Tuscan fishermen believed this two-finned whale was Neptune’s messenger guiding lost ships.
Cited in 19th-century naturalist journals reporting an odd two-finned whale. Resurfaces occasionally in cryptozoology books as a marine mystery. Modern marine biologists consider it a case of observer error.
Giglioli's Whale is a known species with no association to hoax claims in cryptozoological contexts.