In an effort to understand the ecology of Britain's leatherback turtles, which are found in Carmarthen Bay, the Marine Conservation Society (MSC) would like you to help find out more about their favourite food by recording jellyfish strandings on local beaches and jellyfish swarms at sea.

If you regularly walk along beaches, are an Adopt-a-Beach/Beachwatch volunteer, dive or sail, you can help as follows:

• Report your jellyfish encounter onlineat: www.mcsuk.org/marineworld/turtles/jellyfish+survey
• Download a reporting form complete one form per survey and return to MCS by the freepost address provided

It is important to record when you do see jellyfish on the beachor at sea, but it is also useful to know when and where you don't see any. If possible, please fill in a form for each walk or sea trip regardless of whether or not you see jellyfish.