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Last Update: 10/26/2026 at 11:33 PM EST
Gray Whales and Climate Change
Coverage from Grist, The Guardian, and others
Eastern North Pacific gray whales migrate between breeding waters off Baja California and feeding grounds in the Arctic, making them sensitive to changes across a wide ocean region.
Warming and earlier sea-ice loss can disrupt the food web that supports their crustacean prey, contributing to malnutrition, reduced reproduction, and population decline. Weaker or displaced whales may also face added risks from ship strikes and fishing-gear entanglement, including in places such as San Francisco Bay and along the U.S. West Coast. Researchers, agencies, and conservation groups are tracking mortality and considering measures such as vessel-speed limits, route adjustments, monitoring, and renewed protections.
Looking Back
236 Day Timeline
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All Articles23 articles
Important
Scientists and conservationists met in Newport, Oregon, to assess an eastern gray whale decline linked to Arctic warming, food shortages, and ship strikes.
9/15/2026 • Climate Science & Impacts • General
NOAA marine biologist David Weller linked rising Pacific gray whale deaths in 2025-2026 to Alaska sea-ice loss, while groups petitioned NOAA for Endangered Species Act relisting.
7/10/2026 • Climate Science & Impacts • General
Norway, CCAMLR members, and the European Union address krill-fishery limits as climate-driven Southern Ocean sea-ice loss threatens Antarctic food webs.
5/28/2026 • Climate Science & Impacts • General
NOAA Fisheries researchers report 22 eastern North Pacific gray whale deaths along Washington state in spring, citing Arctic climate warming and fertility collapse.
5/24/2026 • Climate Science & Impacts • General
North Atlantic right whale winter calving ended in 2024 with 23 calves as climate-driven copepod shifts are linked to shorter birth intervals and longer migrations.
5/6/2026 • Climate Science & Impacts • General
Scientists report that Arctic sea ice loss and increased Arctic shipping are reducing refuge for bowhead whales, shifting migration patterns and raising risk.
4/30/2026 • Climate Science & Impacts • General
Researchers from multiple institutions report climate driven changes in ocean conditions linked to longer calving intervals in southern right whales at the Great Australian Bight breeding grounds.
2/27/2026 • Climate Science & Impacts • General
Phys.org reports that a Frontiers in Marine Science study, covering 1992 to 2019 in Canada’s Gulf of St Lawrence, documents climate-driven dietary shifts and competition among rorqual whales, with no heat-pump content.
1/23/2026 • Climate Science & Impacts • General
NOAA-linked researchers studied gray whale strandings as climate-driven Arctic food disruption increased whale deaths from vessel strikes in San Francisco Bay during 2018-2025.
4/13/2026 • Climate Science & Impacts • General
Marine Mammal Center and California Academy of Sciences researchers report elevated gray whale deaths in San Francisco Bay from 2018 to 2025, often linked to vessel strikes.
4/13/2026 • Climate Science & Impacts • General
Scientists report climate change linked long calving intervals in southern right whales in the Southern Ocean since around 2015.
2/27/2026 • Climate Science & Impacts • General
Interesting
WhaleSpotter, an AI thermal whale detection system, begins near-real-time alerts for ferries in San Francisco Bay as climate-linked whale distribution increases ship-strike risk.
5/20/2026 • Adaptation & Resilience • General
Researchers led by Mads Peter Heide-Jørgensen documented unprecedented concentrations of baleen whales in the warming Greenland Sea along East Greenland through 2024.
8/20/2026 • Climate Science & Impacts • General
Researchers monitor a recent surge in gray whale deaths around San Francisco Bay, linking Arctic warming to possible food-chain disruptions along migration routes.
5/9/2026 • Climate Science & Impacts • General
Researchers and conservation groups warn that Southern Ocean warming and krill fishing pressures together could undermine baleen whale recovery as Norway and the EU debate krill catch limits.
6/7/2026 • Climate Science & Impacts • General
Molecular Ecology study (June 15) uses DNA metabarcoding of 52 fecal samples from Southern Ocean regions to show broader southern right whale prey use under climate-driven prey shifts.
7/17/2026 • Climate Science & Impacts • General
Marine Mammal Center and California Academy of Sciences report at least 21 gray whales died after entering San Francisco Bay from 2018-2025, with vessel strikes and malnutrition prominent.
4/13/2026 • Climate Science & Impacts • General
Whale Watching Week in Oregon highlights a 2025 eastern North Pacific gray whale population decline, linked to Arctic warming that reduces prey availability.
3/26/2026 • Climate Science & Impacts • General
Arctic warming drives shifts in Greenland fishing livelihoods as sea ice retreats and fish patterns change, threatening traditional communities.
3/4/2026 • Climate Science & Impacts • General
The Trump administration reconsiders 2008 North Atlantic right whale 10-knot speed rules as NOAA-linked tests show detection technologies cannot yet replace mandatory limits, with public comments due June 2.
5/28/2026 • Climate Science & Impacts • General
Amy Warren at the New England Aquarium says 23 North Atlantic right whale calves were recorded this year, while climate-driven prey shifts undermine existing protections.
5/23/2026 • Climate Science & Impacts • General
Cascadia Research Collective and NOAA investigators reported a gray whale death near Raymond, Washington after inland migration up the Willapa River in 2025.
4/7/2026 • Climate Science & Impacts • General
Additional
Scientists and Oregon agencies report declining eastern North Pacific gray whale numbers during Oregon Whale Watching Week, linking the trend to earlier Arctic sea ice melt and prey disruption.
3/24/2026 • Climate Science & Impacts • General