Home⇛Annals of Tropical Research⇛vol. 48 no. 1 (2026)

Plankton-Driven Whale Shark Movements: A Result of Plankton Abundance on Sogod Bay`s Marine Ecosystem?

Stephen V. Naul | Francis Ann R. Sy | Jonelle O. Tablada | Ludito V Ramirez | Khorina A. Tablada | Eric P. Degorio

 

Abstract:

The recent sighting of a whale shark (Rhincodon typus) in the waters around Wawa Bridge, Liloan, Southern Leyte, has captured widespread attention, highlighting the importance of this region as a vital foraging ground for the species. These sightings, which occurred in March 2025, not only raise significant questions about the migratory patterns and behavior of whale sharks but also highlight the need for careful ecological management. This perspective paper explores the role of natural trophic productivity in supporting the presence of whale sharks in the area, framing Sogod Bay as a model for a naturally sustained migratory habitat. We emphasize the concept of food-driven site fidelity as the primary ecological driver for their presence. Furthermore, we discuss the potential for Sogod Bay to serve as a socioecological prototype for non-provisioned ecotourism and conservation, while also highlighting the risks posed by anthropogenic pressures, such as nutrient pollution and microplastics. By focusing on the synergy between natural processes and human stewardship, we aim to provide forwardlooking insights for scientists, policymakers, and communities to strengthen the long-term conservation of this endangered species.



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