Regulations have lowered mercury emissions globally, but the risks to ocean ecosystems and human health may be getting worse.
The EU continues to enter into fresh agreements with countries, despite evidence of serious population declines in the species of interest.
Fish may not have eyelids to close, but they sleep – and perhaps even dream.
Consumers are increasingly concerned about the sustainability of their fish.
Nutritious fish are being diverted away from countries that could benefit from them the most.
Fish can't read maps, and their eggs and larvae drift across national boundaries. Recent research shows that local problems in one fishery can affect others across wide areas.
Big storms with lots of flooding, like hurricanes Dorian and Maria, actually restore the Caribbean's delicate balance between native and nonnative fish species, new research finds.
Scientists are left with two conclusions. Either Nessie is an eel, or she never existed at all.
Fish that live in the sea have found amazing ways to control the amount of water and salt in their bodies, and stay hydrated.
As the oceans warm, fish are moving to stay in temperature zones where they have evolved to live. This is helping some species, hurting others and causing a net reduction in potential catch.
A new IPCC report has called for radical changes in food production to avoid catastrophic climate change. Rice-fish farming and mixed crops could help.
Many chronic diseases increase our risk of Alzheimer's disease. This link between our bodies and our brains means certain healthy choices could protect our cognitive function.
Clownfish eggs exposed to artificial light completely fail to hatch, highlighting the growing problem of light pollution.
Scrapping the idea of a species is an extreme idea – but perhaps a good one.
It's not just the ocean we need to worry about – plastic is accumulating in the world's rivers, too.
Fish farming has been criticised for a lack of sustainability – here's what has been changing and what still remains a challenge.
New research reveals that miniature, brightly coloured fish play an outsized role in the marine food chain in coral reefs.
To ensure overall biodiversity, the intensity and impact of small-scale fisheries' methods needs far more attention.
Californians love their coast and strongly oppose offshore drilling. Will they support converting old oil rigs to artificial reefs – a policy that benefits both marine life and oil companies?
Tiny calcified formations inside fishes' ears can be used to trace a fish's life history – and potentially, how climate change has affected its growth and development.