The image displays a remote-controlled sailboat regatta on the Adriatic Sea, off the coast of Grad Opatija, Croatia

The image displays a remote-controlled sailboat regatta on the Adriatic Sea, off the coast of Grad Opatija, Croatia. Ten model sailboats with white or light gray sails are visible on a body of deep blue, rippled water under clear conditions. In the left foreground, an orange-hulled sailboat with "30" and "CRO" marked on its sails moves towards the right. Immediately behind it, a lime green-hulled boat displays "35" and "CRO" on its sails. To the right of these, another lime green-hulled boat is marked "74" and "CRO". Further right, a light blue-hulled boat and a magenta-hulled boat both show "150" and "CRO" on their sails. Towards the mid-ground, a light yellow-hulled boat has "05" and "HUN" on its sails, while a teal-hulled boat has dark markings on its sail. Additional boats are visible further back and to the right, with partial sail markings including "0", "05", and "150". All boats are actively sailing, arrayed in a spread formation indicating a race or organized competition. No human presence is directly observed within the frame.