This radio-controlled submarine can maintain a steady depth or a certain distance from the bottom. It is equipped with a pressure sensor and a laser distance...
Walked to Cala Cortina today. On the way, @vaviurka spotted a chameleon sitting in a tree! We've been looking for one for years, but they're usually very good at staying invisible. This one must've failed basic chameleon training and chose a poor hideout.
And I spotted a surfaced submarine (much easier job) entering the harbour.
