Was under a smallish sheet of rusty metal jetty junk. (I replaced the protective junk asa I'd taken the photo, before any of the wrasse and Leatherjackets hovering around could get their teeth into it!).
appears to be same individual recorded nearby on 3 February 2024 at https://www.inaturalist.org/observations/198270180
appears to be same individual recorded nearby on 25 January 2024 at https://www.inaturalist.org/observations/197527764