Celebrate our amazing marine life this World Oceans Day

Atlantic Grey Seals
To mark World Oceans Day, with help from Living Seas Wales we’re sharing the stories of some of the fascinating underwater creatures found off British coasts.

Living Seas Wales have told us some fun facts around 12 amazing sea creatures, which can all be found around our coastlines.

They also gave us some top tips on things we can all do to help protect our marine world. Living Seas Wales’ Project Manager Nia Jones recommends:

  • reducing (or ending) single-use plastic usage
  • picking up litter when at the beach
  • sourcing seafood sustainably
  • reducing energy consumption at home

She says:

"Simply telling people how incredible our marine wildlife is and why it’s important to look after it can make a difference.”  

Risso's Dolphin

Risso’s Dolphins have no teeth in their upper jaw and can swallow their squid prey whole.

Risso's Dolphin
Risso's Dolphin. Credit Eleanor Stone

Nudibranch sea slug

The mesmerising nudibranch sea slug gets its name from the Latin for "naked" and "gills", as their gills aren't covered by a shell like some other marine snails.

Sea slug
Nudibranch sea slug. Credit: Alex Mustard

Compass jellyfish

Compass Jellyfish change their sex from male to female as they mature. Jellyfish are 95% water and have no brain, blood or heart.

Compass jellyfish. Credit: Paul Naylor


Lobsters can theoretically live forever - getting older does not raise their chance of dying thanks to an enzyme called telomerase.

Lobster. Creidt: Paul Naylor

Atlantic grey seal

Atlantic Grey Seals are awesome divers and can reach depths of approx 70 metres when searching for food, holding their breath for up to 16 minutes.

grey seal
Atlantic grey seal. Credit: Alex Mustard


Sunfish are the world's largest bony fish, reaching up to three metres long. They can be spotted during the summer months 'sunbathing' on their sides at the surface of the sea.



Limpets and other molluscs provide a vital link in the food chain for many of our rarer species.

Limpets and other molluscs. Credit: Julie Hatcher


There are two seahorse species in the UK: spiny [pictured] and long-snouted. Seahorses are the only species with a true reversed pregnancy: the female transfers the eggs to the male who self-fertilises.

Seahorse. Credit: Julie Hatcher

Spider crab

Spider crabs can live up to 100 years old and have a leg span of 13 feet.

Spider crab
Spider crabs. Credit: Dave Peake

Thornback ray

The Thornback Ray buries itself in the sediment during the day and comes out at dusk to hunt.

Thornback ray
Thornback Ray. Credit: Paul Naylor

Sea anemone

Sea anemones live attached to rocks, catching plankton and tiny animals from the water with their stinging tentacles.

Sea anemone
Sea anemone. Credit: Amy Lewis

Basking shark

The world’s second largest fish, the basking shark, can be found in Welsh waters during the summer months. However, their numbers have fallen by more than 95% around the UK.

Basking shark
Basking shark. Credit: Alex Mustard

What is Living Seas Wales?

The Wildlife Trust’s Living Seas Wales project is using National Lottery funding to find ways we can help look after our oceans.

The project is reconnecting people to a rich ocean world that can’t easily be seen, and helping to turn them into fans of conservation. Activities they have funded include:

  • historical research
  • rock pool rambles
  • limpet stacking championships
  • wildlife spotting
  • beach cleans
  • Citizen Science surveys
  • conservation training
  • recycled craft workshops

Discover more about Living Seas Wales' World Oceans Day activities on their Facebook page.

Find out more

Find out about other projects we have funded: Coast Care Northumberland and Secrets of the Solent.

You might also be interested in...