I have something in common with Matisse. In 1930 he spent time on Apataki Atoll, one kilometre in circumference. He was never bored, and returned home with piles of pen-and-ink drawings and 'bad' photographs. My beach at Potato Point is also quite small, but every day there is change and a richness of detail that never falters. Each day it's a new beach.

This week, it has been thick with shells; I've just started to notice very distinct shell trails on the rocks; the sky is many different shades of spectacular; and the waves pattern the sands.

At the northern end, the infusion of black creates stunning designs, as if a master with charcoal has been sketching amongst the rocks.