New research points to 'heavy metals' having unseen effects on a much larger scale than previously thought.
Mud blister worms make their homes in the shells of oysters and other shellfish, where they weaken their hosts.
Confrontation between French and British scallop fishers is a warning about the resource conflicts of the future.
Neither country's fishing fleet has come out of this well.
Intentional actions by usually solitary octopuses improve a sandy site, allowing group living in 'Octlantis'. But the buzz around the site grew quickly, creating some interesting interpretations.
Maëlle, 7, wants to know why some shells are smooth, while others are corrugated. It turns out that while corrugated shells are strong, smooth shells can move fast.
A fully protected marine reserve off a Scottish island is paying dividends.