Cadborosaurus (called Caddy by locals) is a sea serpent with a horse-like head, large front-facing eyes, and flippers on a serpentine body. Sightings (including a couple of unclear videos), stories, carcasses and even captures of “baby cadborosaurus” have been reported off the coast of British Columbia for hundreds of years, starting with the First Nations people. Caddy has been carved into petroglyphs along the Pacific coastline as far north as Alaska and as far south as San Francisco Bay. Sightings by European settlers date back 200 years.
Regarding caracasses, nine reported since 1930 are hypothesized to have been basking or whale sharks, beaked whales, giant oarfish, sea lions or elephant seals.
Fisherman William Hagelund claimed he caught a live, 40-centimeter long infant Cadborosaurus off De Courcy Island in 1967. The creature had scales, two flippers and a long, flat tail. He placed it in a bucket of water to have it examined by scientists later, but for some reason returned it to the sea instead. In 1991, on the San Juan Islands, Phyllis Harsh claims to have caught a 2-ft baby Caddy and returned it to the water. It has since been argued that these “infant” finds were actually pipefish.
Of course, it’s always easy to explain things away in retrospect! Wikipedia mentions that Dr. Paul LeBlond, director of Earth and Ocean Sciences at UBC and Dr. Edward Blousfield, retired chief zoologist of the Canadian Museum of Nature, state that every possible elongated animal has been put forward as an explanation for Caddy. 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 anteriorly and posteriorly. Darren Naish (a British paleontologist), on the other hand, 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. For me, I like looking out at the foam-flecked ocean surface which obscures immense hidden depths, and meditating on the limits of our current knowledge…