Largest global shark biomass found in the northern Galápagos Islands of Darwin and Wolf

Research conducted at the northern Galápagos Islands of Darwin and Wolf reveals the largest global shark biomass ever recorded, averaging 17.5 tons per survey site. This remarkable finding underscores the ecological significance of these islands within the Galápagos Marine Reserve (GMR), where sharks dominate reef fish communities despite severe depletion elsewhere due to unsustainable fishing practices. Stereo-video surveys over two consecutive years provided quantitative estimates of fish abundance, highlighting the unique biodiversity and conservation value of Darwin and Wolf. Although historically unprotected from fishing until 2016, their current status offers hope for long-term preservation, benefiting both ecological integrity and the region's economically vital dive tourism industry.

Salinas de León, P., Acuña-Marrero, D., Rastoin, E., Friedlander, A. M., Donovan, M. K., & Sala, E. (2016). Largest global shark biomass found in the northern Galápagos Islands of Darwin and Wolf. PeerJ, 4, e1911. Portico. https://doi.org/10.7717/peerj.1911