Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY1. Southwest Pinnacle
Koh TaoSeen on 58% of dives in July
Marine life
Siganus javus
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) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 58% of dives in July
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 16% of dives in November
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 15% of dives in August
Photo: (c) Dan Schofield, some rights reserved (CC BY), via Wikimedia Commons, CC BY 4.0Seen on 14% of dives in August
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 13% of dives in August
Photo: (c) ig: underwater.logs, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 13% of dives in August
Photo: Amada44, via Wikimedia Commons, CC BY SA 3.0Seen on 13% of dives in August
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 13% of dives in April
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 12% of dives in August
Photo: (c) luluchouette, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 12% of dives in August
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 11% of dives in July
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 10% of dives in July
Seen here: Doublebar RabbitfishPhoto: H. Schlegel, via Wikimedia Commons, PD · not taken at this siteSeen on 10% of dives in July
Seen here: Moon wrassePhoto: Leonard Low from Australia, via Wikimedia Commons, CC BY 2.0 · not taken at this siteSeen on 10% of dives in July
Photo: (c) Jan Ebr & Ivana Ebrová, some rights reserved (CC BY), via Wikimedia Commons, CC BY 4.0Seen on 8% of dives in August
Photo: (c) Jean Jacques Godon, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 8% of dives in July
Photo: (c) Shane Austin, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 8% of dives in August
Photo: (c) Kat Lim, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 8% of dives in May
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 7% of dives in July
Photo: (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 6% of dives in August
Photo: (c) Jan Ebr & Ivana Ebrová, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 5% of dives in August
Photo: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BYSeen on 4% of dives in August
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.