Low tide today offerred plenty of amusement. There was another porcelain crab so I think they're genuinely numerous amongst those rocks and that I probably didn't overlook them before. Be worth trying again in NT1582 to see if I can find any. My first fish of the year/square and quite unexpected under these fairly small boulders.
There are other things to inspect including a ragworm, a new scaleworm and a small brittlestar which may or may not be mature. They have their own little tank as a temporary home