Sea urchin habitat. Goat Island Channel between Goat Island on the left and the Leigh Marine Laboratory (University of Auckland, New Zealand) on the right with Little Barrier Island, a wildlife sanctuary, in the distance. Echinoderm Reef is in the foreground.

Tide pools in the rocky intertidal zone along the shore of Goat Island Channel

Collecting sea urchins (Evechinus chloroticus) from small tide pools at low tide.

A four-cell stage sea urchin embryo. Much of my research on temperature tolerance has been focused on early development in sea urchins.

Sea urchin pluteus larva. I have investigated developmental responses to thyroxine treatment in advanced larval stages of sea urchin and starfish development.