Cadborosaurus, nicknamed Caddy, is a cryptidsea serpent in the folklore of regions of the Pacific Coast of North America. Its name is derived from Cadboro Bay in Greater Victoria, British Columbia, and the Greek root word "saurus" meaning lizard or reptile.
Cadborosaurus willsi is said by witnesses to resemble a serpent with vertical coils or humps in tandem behind the horse-like head and long neck, with a pair of small elevating front flippers, and either a pair of hind flippers, or a pair of large webbed hind flippers fused to form a large fan-like tail region that provides powerful forward propulsion.
Dr. LeBlond, director of Earth and Ocean Sciences at UBC, and Dr. Blousfield, retired chief Zoologist of the Canadian Museum of Nature, state every elongated animal has been put forward as an explanation for Caddy. These animals include Conger eels, humpback whales, elephant seals, ribbon or oar fish, basking sharks and sea lions. LeBlond and Blousfield state no known creature matches the characteristics found in over 200 sightings collected over a century, noting that Caddy is described as having flippers both anterior and posterior.Darren Naish contends that LeBlond and Blousfield are engaging in bad science and have incorrectly assumed that different, conflicting eyewitness reports are all descriptions of one species.
In 1943 two police officers, Inspector Robert Owens and Staff Sergeant Jack Russell saw a "huge sea serpent with a horse like head" in Georgia Strait. Later "with a pair of binoculars Sgt. Russell saw that the strange apparition was a huge bull sea lion leading a herd of six sea lions…Their undulations as they swam appeared to form a continuous body, with parts showing at intervals as they surfaced and dived. To the naked eye, the sight perfectly impersonated a sea monster."