Harmful algae blooms are an increasing problem in Florida. Once nutrients are in the water to fuel them, little can be done to stop the growth, and the results can be devastating for marine life.
Climate change has already made tropical oceans too hot for some marine species to survive. As they flee towards the poles, the implications for ecosystems and human livelihoods will be profound.
The grisly discovery of a disembodied foot on a NSW beach was a tragic twist in the mystery of missing woman Melissa Caddick. Such tragedies can also reveal hidden currents connecting the planet.
Even if every human being on Earth went for a dip in the ocean at the same time, they’d be just a drop in the bucket compared to the size of the planet’s seas.
Aquaculture is a growing source of healthy protein for millions of people around the world, but there are big differences between farming fish on land and at sea.
By measuring how and when elephant seals sleep, researchers were able to figure out how elephant seals change their risk-taking behavior as they gain weight.
Some plastic sent overseas for recycling ends up as pollution, or goes up in toxic smoke. But there are steps we can take to ensure our waste is processed as intended.
Joël Guiot, Aix-Marseille Université (AMU) et Wolfgang Cramer, Centre national de la recherche scientifique (CNRS)
The Mediterranean region, with its biodiversity, climate, demographics, and economic activities such as tourism, agriculture and fisheries, is particularly vulnerable to environmental risks.
Mar Benavides, Institut de recherche pour le développement (IRD)
In the ocean, phytoplankton helped by diazotrophs play an outstanding role in withdrawing CO₂ from the atmosphere. But climate change is disturbing this delicate balance.