For nearly 20 years, the blue-spotted bamboo shark, found only in Madagascar, went scientifically undetected and unrecorded. But researchers have now found four new records of the “lost” shark while surveying fishing villages and a Malagasy university’s fish collection. These recent records, and interviews with fishers, suggest the species may be more common than previously thought, according to a new report in Oryx.  The blue-spotted bamboo shark (Chiloscyllium caeruleopunctatum), so named for the blue-white spots on its brown body, was first described based on a specimen caught off Madagascar in 1914. A second record of the species came 92 years later — a photograph of a shark caught in 2006. Since then, the species largely went unconfirmed, until researchers began surveying fish markets and landing sites in Madagascar in September 2025. Report’s lead author Tsarahasina Fanomenzana, a young Malagasy intern from the NGO Madagascar Whale Shark Project, was showing photos of sharks and rays he’d seen at a fishing village on the east coast to shark expert and co-author David Ebert. “One of the photos was of the blue-spotted bamboo shark,” Ebert told Mongabay by email. “He didn’t think too much of it as there were some other images of shark and ray species he thought were more interesting.” However, Ebert said he was “more than excited,” because the pictures confirmed the blue-spotted shark was still around. He was in Madagascar for the Lost Sharks project, supported by the Save Our Seas Foundation, which aims to find and raise awareness…This article was originally published on Mongabay