Local shark researchers have performed a rare necropsy of a 12-foot great white shark that washed up dead on a Cape Cod beach. The mature male shark — previously identified as “Koala” in 2022 — was found on Nauset Beach earlier this week, and he was secured by officials from the town of Orleans and the Orleans Police Department.

A necropsy was underway Wednesday to determine the animal's cause of death, according to the Atlantic White Shark Conservancy.