You can find a blue Linckia, also known as a blue sea star, lounging in shallow waters exposed to sunlight near coral, rocks and sponges. They have tube feet connected to an elaborate system that goes ...

This project has now finished. Thank-you to all who took part. What makes a starfish blue? (or yellow, or grey or…?) The iconic sea star Linckia laevigata is the ‘poster child’ for tropical reefs in ...