Warming Waters are Forcing Cold Water Fish Into New Territories — and It Could Spell Trouble For Marine Ecosystems
Rising ocean temperatures are causing fish species to migrate to cooler waters, impacting marine ecosystems. This shift is particularly evident during reproduction periods, leading to potential winners and losers among species. Scientists warn that curbing carbon emissions is crucial to mitigate these changes and protect marine life.
- ▪Ocean temperatures have risen significantly over the past 50 years, with 2023 and 2024 recording the warmest global ocean temperatures on record.
- ▪Fish species are migrating to cooler waters, particularly during reproduction, which can lead to changes in local populations.
- ▪In the Gulf of Maine, the migration of longfin squid is negatively impacting the local northern shrimp population.
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Ocean temperatures are rising, and fish species are migrating to adapt to warmer waters, according to a report in the Annual Review of Marine Science. Almost all of the increase in oceanic temperature changes has occurred in the past 50 years, according to the National Oceanic and Atmospheric Administration (NOAA). In 2023, the global ocean temperature was the warmest on record. But in 2024, temperatures increased, and the record was broken for the second year in a row, according to State of the Climate, a special report by the American Meteorological Society. Many fish simply can’t handle the heat.“Marine species are very temperature sensitive, more so than what we see on land,” James W.
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