Australia’s sea snakes may be more in danger of extinction than previously thought, marine scientists say.

A new investigation proves the key role of cod as regulator of the whole Baltic Sea ecosystem.

The first Danish study into how one of the world’s largest ocean wind farms affects marine life is now completed, and shows that fish thrive in the area.

Some corals may be able to adapt to changes in sea temperature, making them more resilient to climate change than previously thought.

Species invasions already threaten marine biodiversity globally. Scientists are worried that warmer ocean conditions further will facilitate the establishment and spread of invasive species.

Stress factors such as anoxia, toxic sulfides and low pH are a menace to coral tissue and accelerate coral death.

Being a great dad can mean starving to protect the kids, putting up with a jealous spouse – and often, dying young. At least, if you’re a cardinalfish.

Loss of predatory fish leads to more sea urchins, less coralline algae, and lower recruitment of juvenile corals on reefs off the coast of Kenya.

Climate change not only increases the water temperature, but also the acidity of seawater. This creates problems for among others corals. However, cold-water corals may be able to adapt to a new environment.

They can stop the world's biggest warships, cripple power stations and kill humans with a single sting but jellyfish are not about to take over the world and turn our oceans to slime, as some reports have claimed.