The eyewitness, who first heard the animal splashing by the southeastern coast, said she couldn't believe her eyes.

Unusually active marine mammals seen near Unalaska may actually be Pacific white-sided dolphins.

Porpoise spotted heading up the Pastolik River

The remains of a possible seal carcass tangled in netting may have come into contact postmortem, "ghost fishing" as a potential cause.

The Finnish Coast Guard came to the rescue of a whale caught in a fish trap on Saturday in the narrow region of the Gulf of Bothnia known as Kvarken.