Sunday, 25 Jul 2021 12:29 PM MYT Davies said efforts to conduct further field samplings were hindered by a lot of factors, including the movement control order travel restriction. — Pictures courtesy of Jason Isley Follow us on Instagram and subscribe to our Telegram channel for the latest updates. SEMPORNA, July 25 — Malaysia’s marine biologists say human factors can be ruled out as the cause of the mysterious skin disease plaguing sharks near popular dive spots in Sipadan Island near here, but further investigation is needed to find definitive answers to help the sharks. Marine experts were prompted to conduct further investigations into the phenomenon but their efforts are limited to a short-term basis due to several factors.