Seen here: Wimple FishPhoto: (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY), CC BY · not taken at this site1. Batu Nisan
Perhentian IslandsSeen on 15% of dives in April
Marine life
Zanclus cornutus
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.
Seen here: Wimple FishPhoto: (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY), CC BY · not taken at this siteSeen on 15% of dives in April
Photo: (c) Sébastien Jungo, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 11% of dives in April
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 5% of dives in March
Photo: Amada44, via Wikimedia Commons, CC BY SA 3.0Seen on 4% of dives in March
Seen here: Pearly Monocle BreamPhoto: (c) Bernard DUPONT, some rights reserved (CC BY-SA), CC BY SA · not taken at this siteSeen on 2% of dives in April
Photo: (c) Shane Austin, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 2% of dives in March
Photo: (c) ig: underwater.logs, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 2% of dives in March
Photo: (c) Dan Schofield, some rights reserved (CC BY), via Wikimedia Commons, CC BY 4.0Seen on 2% of dives in March
Photo: (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 2% of dives in March
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 1% of dives in March
Photo: Kris Mikael Krister, via Wikimedia Commons, CC BY 3.0Seen on 1% of dives in April
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.