BLACKTIP REEF SHARK STUDY
Shark Study
Blacktip Reef Shark Study
This study examined the presence and movement patterns of juvenile blacktip reef sharks (Carcharhinus melanopterus) at Chagar Hutang Turtle Sanctuary, Redang Island, a site recognized as a potential shark nursery ground in Malaysia. The sanctuary comprises well-protected shallow reef and lagoon habitats with minimal human disturbance, offering suitable conditions for juvenile sharks. Chagar Hutang has also been designated as an Important Shark and Ray Area (ISRA), underscoring its importance for elasmobranch conservation.
Blacktip reef sharks commonly utilize shallow coastal habitats during early life stages, yet their spatial ecology in Malaysian waters remains poorly understood. This study provides essential baseline information to support the identification and management of critical shark nursery habitats within marine protected areas.
A passive acoustic telemetry array was deployed at Chagar Hutang Turtle Sanctuary to monitor juvenile shark presence. Data were collected over the study period from July to October 2024, with research support from RHB Islamic Bank Berhad.
- 90+ Days: Sharks were detected over this period, indicating strong site use.
- 40% Preference: One receiver recorded 40% of detections, suggesting a specific habitat preference.
- Peak Hours: Most detections occurred at 07:00 and 17:00, when sharks were closest to the shoreline.
The findings show that juvenile blacktip reef sharks regularly use shallow coastal areas at Chagar Hutang, indicating its importance as a potential nursery site.
Ocean Hope MessageUnderstanding juvenile habitat use is important for strengthening shark conservation strategies within marine protected areas. Protecting these nearshore habitats is therefore important for shark conservation.