Billions of crabs went missing around Alaska. Scientists now know why (cnn.com)

Even the deep ocean is now seeing heat waves, and that is causing snow crabs to starve due to increased caloric needs, as well as increased depredation from species that previously couldn't reach them due to the cold temperatures

Atlantic lobster are showing signs of trouble too:

https://fortune.com/2023/10/19/new-england-maine-lobster-fis...