Paper nautilus: a glossy white fan of a shell, so fragile that the sun infused it, gleaming through every tight fold. Illustration: Michael Viney

Once, walking the tideline on my first Greek island, I came upon a most beautiful oceanic artefact. It covered the palm of my hand and there weighed a(...)

Seabed: would too many oysters spoil the mix of life? Illustration: Michael Viney

Once upon a time, the oysters of Ireland were a native mollusc, thriving in the island’s more sheltered bays. At Clew Bay, in Co Mayo, in the late 180(...)