Study spotlights West Papua habitat as whale sharks face increased pressures

A new study reports that the Bird’s Head Seascape off Indonesia’s West Papua serves as a vital habitat for juvenile male whale sharks, but lift-net fisheries, tourism boats and emerging mining activities in the region underscore the urgent need for stronger protection and management. The population demographics of the whale shark (Rhincodon typus) within the four key BHS regions (Cendrawasih Bay, Kaimana, Raja Ampat, and Fakfak) showed a dominance of juvenile males that use these habitats as nursery or foraging grounds and reducing predation risk while growing, according to the research published Aug. 28 in the journal Frontiers in Marine Science. The international group of researchers also found that more than half of the whale sharks in the study had injuries from preventable human causes. “The scars and wounds we see on whale sharks are like a diary of their encounters with people,” Edy Setyawan, lead conservation scientist at the Elasmobranch Institute Indonesia who is the lead author of the paper, told Mongabay in an email. The Bird’s Head Seascape is a vital nursery for juvenile male whale sharks. Image courtesy of Edy Setyawan. Most whale shark sightings occurred in Cenderawasih Bay and Kaimana. Image courtesy of Edy Setyawan. From 2010-23, the researchers tracked 268 whale sharks across the BHS — a region hosting a network of 26 marine protected areas and a hotspot for marine megafauna and tropical marine biodiversity — using photos from scientists and citizen divers. Nearly all sightings were in Cenderawasih Bay and Kaimana, where the…This article was originally published on Mongabay