© Jack Versiani Holt

We want to hear about the wildlife you spot at the coast and at sea, especially basking sharks, marine turtles and jellyfish in UK and Irish waters.

Please click on the options below to report your sightings. Your sightings provide vital information for our scientists and help us come up with solutions to protect our precious sealife.

(To report a sighting you will need to log in to the website, this helps us ensure the validity of the data. If you do not have an account it’s easy to create one from the ‘register’ link on the login screen)

© Kate Hutchingson

Basking sharks

Tell us about your basking shark sightings

© Jack Versiani Holt

Marine turtles

Tell us about your turtle sightings

Underwater surveys

Seasearch is a project for volunteer sports divers

© Calum Duncan


Tell us about your jellyfish sightings

© Jack Versiani Holt

Interactive sightings map

Did you know?…

Over 1,000 marine wildlife sightings were reported to MCS last year

Over 15,000 marine species are found in UK seas

Over half a million people have voiced their support for ‘marine protected area’ designation in the UK through our campaigns

Help protect marine wildlife

We need to secure £50,000 for the next two years to make the case for new Marine Protected Areas and survey existing sites to prove just how effective they are. Your support is vital in helping us make this happen.

Donate now