הזיהויים של goodonya

Not 100% on the species ID, so putting here for an expert opinion :)
Found while scuba diving at 6m.

1 Gazeley Ave, Silverdale, Hamilton 3216.

Common in coastal podocarp-broadleaved forest

Three, dead on or near a slip next to the dam road. One more recently dead (second image)

Two, in grass verge near west end of dam causeway. Both dead

Sea snail - Maurea Selecta
Family: Calliostomatidae

empty shell, no sign of predation

Found in my bush garden

Empty snail shells found under a board on the ground. Up to 7 mm width, 4 mm height.