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Blue-rayed limpet

The kingfisher blue stripes of a blue-rayed limpet are a magical sight whilst rockpooling - you'll need to go on a very low tide though as their favourite home is on kelp.

Scientific name

Patella pellucida

When to see

January to December

Species information

Statistics

Length: Up to 2cm
Common

Habitats

About

The blue-Rayed limpet is found on kelp (a kind of seaweed) that lives right at the bottom of the shoreline as it doesn't like to be exposed for long at low tide. In order to spot blue-Rayed limpets when rockpooling, you'll need to go on a very low tide - but keep a close eye on tide times so you don't get caught out. Blue-Rayed Limpets feed on the kelp itself, creating a little pit on the kelp frond as they munch away.

How to identify

A small oval shell, no more than 2cm in length. Translucent and brown-ish in colour but with 2-8 distinctive dashed kingfisher blue lines. The lines are absent in juveniles (under 1cm). Only found on kelp on the very low shore and only uncovered on low tides. Can be seen when snorkelling or diving.

Distribution

Found on low tides on rocky shores around the UK and out to 25m deep. Absent from East Coast south of the Humber Estuary.

Did you know?

Blue-Rayed limpets move down the Kelp in autumn to avoid being cast adrift if the kelp frond is damaged or lost in rough winter seas.