Tidal Pools — Heide Pretorius

Nudibranch in the tidal pool I lay on my stomach for twenty minutes for this one — it kept moving in under the lip of the rock.

What the tide left A crab's shell and abdomen, washed up separately but a metre apart on the wet sand.

Spergularia on the salt ground Two centimetres across. The succulent stems around it are salt bush, which turns red towards summer.

Pincushion, from inside Leucospermum cordifolium at the end of its flowering, when the styles begin to curl.

Green and white A page from the field book: what opened after the first good rain.

Yellow button among the vygies Cotula turbinata, the only one open on an overcast August morning. The vygies around it were still closed.