A group of urchins Arbacia lixula on a rock face at about 8 metres depth at Montecristo. Small cup corals Caryophyllia smithii can be seen near the top of the picture where they are partly shaded from the light under a small ledge,
The Rainbow Warrior is in the Mediterranean for a three-month ship tour taking action on the threats to the sea and calling for a network of large-scale marine reserves to protect the health and productivity of the Mediterranean Sea.