New research study on false killer whales

The Research Team is excited to announce that we have started a new study on false killer whales! We started field work for this study in May 2018 and will survey the leeward waters surrounding the Maui 4-island region; up to 50 miles offshore. This brings us into deep waters (> 2,500 ft) where the possibility of seeing other species is also very likely. In case this does happen, we also have authorization to collect data and photo-ID of 15 other toothed-whale species. The main objectives of this study are to assess the distribution, population structure, habitat use, body condition, and behavior of false killer whales.

The majority of false killer whales encountered within the waters of the Maui 4-island region are part of the Main Hawaiian Islands (MHI) insular stock which is currently listed as “endangered” under the Endangered Species Act. The minimum population estimate for the MHI insular stock is 151, based on the number of unique individuals photographed (Baird et al. 2013). This stock faces a number of threats such as the effects from small population size, high levels of contaminants, interactions with fisheries, and a decrease in their prey species biomass.

Given the “endangered” status of the MHI insular false killer whales, there is a need to gain a better understanding of the species in order to develop effective management plans to aid in their recovery. Our research will provide a continuous, long-term data set using new techniques and technologies to  address gaps in our knowledge of this population. In addition to photo-identification, location, and behavioral observations, we will be using unmanned aerial vehicles (commonly called ‘drones’), photogrammetry, and underwater footage to gain information on body condition, growth rates, and possibly detect pregnant females.

We are excited to begin this new study and to learn more about this endangered population. Stay tuned for updates from the field!

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