Marine biology

Rare sea slug photographed in UK waters

Creepy-looking creatures that lurk in our oceans

Med Sea heatwave might feel nice for holiday swimming but there's a catch

WATCH: Amazing minke whale sighting. Video, 00:00:31WATCH: Amazing minke whale sighting

Pollution source identified after fish found dead

Invasive catfish removed from country park lake

Killer whales make kelp tools to 'massage' each other

Warning water sports disturbing whales and dolphins

Big octopus catch 'does fishing industry a favour'

Sir David Attenborough champions Arran seabed restoration

Expert honoured to work on Attenborough film

Belfast shark: 'It's not something you see every day' Video, 00:02:06Belfast shark: 'It's not something you see every day'

'Quite a surprise' to spot 4ft shark swimming in river

£1m first step to restore Sussex's coast

Chip-shop fish key to seabed health, study finds

Baby rays bred in captivity released into the sea

Colossal squid filmed in ocean for the first time

Cuttlefish's stunning skin display mesmerises crab before attack. Video, 00:00:44Cuttlefish's stunning skin display mesmerises crab before attack

Marine rewilding project sees 'remarkable' results

Project launched to protect seagrass meadows

Stripey-faced fish named after warrior princess San

Fishers trained to dissect fish to gather data

'Saving the ocean is all I've ever wanted to do'