Yesterday's beach trip revealed lots of driftwood 'mulch' near the river mouth. In it were many five-armed starfish.

Fine bits of driftwood like mulch.
A white 5-armed starfish.

I also saw my first ever Hermit Crab, in quite a big shell.

Hermit crab peeks out from a large shell. Kia ora.
Kia ora.

When I touched the shell the crab retreated.

Hermit crab retreats into the shell.