Lyman’s Beach on Hawaii’s Big Island has been the scene of two separate incidents involving what is believed to be a tiger shark (Galeocerdo cuvier) biting a surfboard, according to a KHON2 report. The first incident occurred Sunday when a stand-up paddleboarder had her board bumped by a shark, followed by the shark biting the board. The second similar event occurred yesterday, in which, a longboard surfer had her board bumped and then bitten. No one was injured in either incident, but in both cases bite marks were left in the surfers’ boards.

Both incidents resulted in nearby beaches being temporarily closed. Department of Land and Natural Resources (DLNR) air searches were unable to spot the shark in either instance. In both cases the surfers reported seeing “lots of turtles” in the area. Sea turtles are a known food source for tiger sharks.

Speculation that the same shark might be responsible for both bites is being investigated. DLRN will compare the bite marks on both boards to determine if the bites were delivered by the same shark. The size of the shark(s) will also be determined from the bite marks.