Looking at that photo I’m now convinced , resident craft with tube worm on the shell verse mobile cray lighter shell colour and lack of barnicals/ growth on its shell…see the same thing at Kaikoura ..locals are dark red , movers are lighter ….where they come from and go to no idea. But this is a great example example of the different types.
Yes could very early shedder. Don’t think so myself didn’t see any sign of sheds yet.
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