Stretching out its sail-like lobes to ride the Mediterranean currents, this delicate comb jelly is trawling for food. This was a rare sight. The species is normally found with its fragile sails folded or damaged. Angel approached his subject extremely carefully. Describing it as a ‘glass butterfly’, Angel saw that ‘it folded its sails at the slightest vibration’.

This comb jelly steers itself through the water using beating rows of hair-like cilia which form combs along its cylindrical body. The combs scatter light, creating colourful iridescence. Unlike jellyfish, comb jellies do not sting. Instead they catch plankton and other small prey using sticky cells in their lobes and tentacles.