Reefscene, a field guide for Red Sea fish

Field notes

The homepage describes a three-part loop: learn species through a four-choice quiz, identify a fish from remembered color, shape, or habitat, then mark sightings in separate House Reef and Dive Reef collections. It says fish photos are openly licensed and photographer-credited, and that saving them over Wi-Fi supports later offline use. Reefscene is not in the App Store; the page invites divers and snorkellers to join a small test crew.