The Zuiyo-maru Carcass

Record summary

The Japanese fishing vessel Zuiyo-maru recovered a badly decomposed carcass near New Zealand in 1977. Photographs and tissue samples prompted claims that it might represent an unknown marine animal, while many zoologists identified it as a decomposed basking shark. The incident matters because it provides a documented specimen dispute involving photographs, samples, expert opinion and deterioration effects. Later cryptozoological literature often presents it as unresolved, but the basking-shark explanation is the conventional interpretation. Researchers should consult contemporary scientific analyses rather than image-based retellings alone.