Publications

Ship collision risk threatens whales across the world’s oceans
Publication date
November 21, 2024
Authors
Anna C. Nisi, Heather Welch , Stephanie Brodie , Callie Leiphardt , Rachel Rhodes , Elliott L. Hazen , Jessica V. Redfern , Trevor A. Branch , Andre S. Barreto , John Calambokidis , Tyler Clavelle , Lauren Dares , Asha de Vos , Shane Gero, Jennifer A. Jackson , Robert D. Kenney, David Kroodsma , Russell Leaper, Douglas J. McCauley, Sue E. Moore, Ekaterina Ovsyanikova, Simone Panigada, Chloe V. Robinson , Tim White , Jono Wilson, Briana Abrahms
Abstract

After the near-complete cessation of commercial whaling, ship collisions have emerged as a primary threat to large whales, but knowledge of collision risk is lacking across most of the world’s oceans. We compiled a dataset of 435,000 whale locations to generate global distribution models for four globally ranging species. We then combined >35 billion positions from 176,000 ships to produce a global estimate of whale-ship collision risk. Shipping occurs across 92% of whale ranges, and <7% of risk hotspots contain management strategies to reduce collisions. Full coverage of hotspots could be achieved by expanding management over only 2.6% of the ocean’s surface. These inferences support the continued recovery of large whales against the backdrop of a rapidly growing shipping industry.

Journal
Science
DOI
https://doi.org/10.1126/science.adp1950
Region
California Current