Photo: (c) Sébastien Jungo, some rights reserved (CC BY), via iNaturalist, CC BY1. Seringgih Island
Perhentian IslandsSeen on 10% of dives in September
Testudines · Marine life
Eretmochelys imbricata
Best monthly chance of seeing it per dive, at the best site in each destination.
Chances are the share of dives on which it was seen, in the best month.
Photo: (c) Sébastien Jungo, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 10% of dives in September
Photo: (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 5% of dives in May
Photo: (c) Shane Austin, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 2% of dives in May
The ocean covers 70% of the planet but is the least-recorded place on Earth. Scientists can't be on every reef. Divers are.

Most ocean records come from a few coasts. Log every dive, even quiet sites.
Full dive logs show when a species goes missing. Log every animal, not just the highlights.
Change only shows up over years. Keep logging your home reef.
Lookalike species trip up records. Tag animals and add a photo.