During a dive off the coast of Tulamben, Bali, Indonesia, Sergio was finning across a volcanic, dark grey, sandy seabed when suddenly, he saw a bright-coloured organism – a fire urchin with an elegant couple of little Coleman shrimps. The fire urchin has quills that are very toxic to humans – the shrimps avoid this danger by seeking out safe areas between the quills.
Nikon D90; 60mm f2.8 lens; 1/60 sec at f18; ISO 200; Subal housing; Two Inon Z-240 strobes.
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