Had a typically excellent dive today in Lembeh Strait (well near but not in the Strait, to be accurate, it is a site that most of the resorts do not go to) which was a nice send off from Lembeh Resort for my group before we head to the Seven Seas in Raja Ampat.
In addition to seeing hairy frog, ambons, flambos x2, seahorses etc at the site, the highlight was this pair of mating mimics (showing behaviour exactly as Andrea and Antonella Ferrari described a few years ago, with the smaller male riding on top).
Of course some observers might consider this to be an impression
- but it was definitely mating!
The final embrace was quite similar to that which I photographed in Caribbean long arm octopus last year before the Wetpixel Shark trip:

Alex