Hello Phil,
Yes, true, we have some very interesting caves in this area, the most important is the Moraig underground river, 6 km of explored galleries, 2500 m. reached (the end has not yet been reached) and depths around 100 m.
And, of course, every diving zone has its "underwater Cathedral"...
Diving on the Costa Blanca is not very interesting if you are looking for big stuff (groupers, rays and eagle rays are the most representative) but if, like me, you enjoy the macro world, there are many more possibilities.
Further south there are much more interesting areas, with both large and small marine life, such as the Cabo de Palos marine reserve, or the Cabo de Gata natural park, in Almería, with very good diving and impressive landscapes. Don't hesitate to ask me if you visit Spain again.
And my Fuji... well, it is a pleasure in combination with the Nauticam housing, dials for the most important functions, everything accessible with a simple touch, good focus, very good RAWs with fantastic color, double card, APSC size in body and lenses, very reliable... oh, and that retro look that I love. In love with the X-t3 and upgrading to X-t5 as soon as I can...
A pleasure to read your comments, much appreciated.
All the best!!!