PORTLAND, Maine — This year’s marine heat waves and spiking ocean temperatures foretell big changes in the future for some of the largest fish in the sea, such as sharks, tunas and swordfish. The ...
The open ocean’s twilight zone, a vast deep ecosystem rich in fish biomass, is poorly understood because it is expensive and challenging for humans to reach its depths 200–1000 meters (660–3,280 feet) ...
A new study by marine biologists reports that seals can essentially act as 'smart sensors' for monitoring fish populations in the ocean's eerily dim 'twilight zone.' Over the past 60 years, marine ...
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