Marine life

Where to see Hongkong Butterflyfish

Chaetodon wiebeli

Dive sites
21
Destinations
1
By destination

Hongkong Butterflyfish, destination by destination.

Best monthly chance of seeing it per dive, at the best site in each destination.

Best sites

The best dive sites to see it.

Chances are the share of dives on which it was seen, in the best month.

  1. Bolinopsis rubripunctata near Chalok BayPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    1. Chalok Bay

    Koh Tao
    Open Water3-12 mAbove your levelLevel not known: check before you book

    Seen on 31% of dives in August

  2. Titan Triggerfish imported from iNaturalist photo 420838757 on 3 November 2024 near Hin NgamPhoto: (c) Jan Ebr & Ivana Ebrová, some rights reserved (CC BY), via Wikimedia Commons, CC BY 4.0

    2. Hin Ngam

    Koh Tao
    Beginner3-16 mCoralAbove your levelLevel not known: check before you book

    Seen on 26% of dives in October

  3. Blacktip Grouper near Tao TongPhoto: (c) luluchouette, some rights reserved (CC BY), via iNaturalist, CC BY

    3. Tao Tong

    Koh Tao
    Open Water5-18 mMacroAbove your levelLevel not known: check before you book

    Seen on 26% of dives in August

  4. Mottled Lightfoot Crab near King Kong RockPhoto: (c) Jean Jacques Godon, some rights reserved (CC BY), via iNaturalist, CC BY

    4. King Kong Rock

    Koh Tao
    Open Water5-18 mAbove your levelLevel not known: check before you book

    Seen on 21% of dives in October

  5. Monofin Dartfish near Aow TanotePhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    5. Aow Tanote

    Koh Tao
    Beginner2-20 mCoralWreckAbove your levelLevel not known: check before you book

    Seen on 21% of dives in October

  6. Doublebar Rabbitfish near Buddha PointPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    6. Buddha Point

    Koh Tao
    Open Water3-12 mCoralAbove your levelLevel not known: check before you book

    Seen on 21% of dives in August

  7. Slingjaw Wrasse near Aow LeukPhoto: (c) Jan Ebr & Ivana Ebrová, some rights reserved (CC BY), via iNaturalist, CC BY

    7. Aow Leuk

    Koh Tao
    Beginner3-20 mCoralAbove your levelLevel not known: check before you book

    Seen on 19% of dives in October

  8. Phallusia arabica near White RockPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    8. White Rock

    Koh Tao
    Open Water2-26 mBig animalsCoralAbove your levelLevel not known: check before you book

    Seen on 17% of dives in July

  9. Moon wrasse, seen at HTMS Sattakut (photo taken elsewhere)Seen here: Moon wrassePhoto: Leonard Low from Australia, via Wikimedia Commons, CC BY 2.0 · not taken at this site

    9. HTMS Sattakut

    Koh Tao
    Advanced Open Water18-31 mWreckAbove your levelLevel not known: check before you book

    Seen on 15% of dives in July

  10. Titan Triggerfish imported from iNaturalist photo 51505047 on 2 November 2024 near TwinsPhoto: (c) Dan Schofield, some rights reserved (CC BY), via Wikimedia Commons, CC BY 4.0

    10. Twins

    Koh Tao
    Beginner5-25 mCoralAbove your levelLevel not known: check before you book

    Seen on 14% of dives in July

  11. Bubble Coral near HTMS Hanhak Sattru WreckPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    11. HTMS Hanhak Sattru Wreck

    Koh Tao
    Open Water16-28 mDriftWreckAbove your levelLevel not known: check before you book

    Seen on 14% of dives in October

  12. Redbreast Maori Wrasse near Lighthouse PinnaclePhoto: (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY), via iNaturalist, CC BY

    12. Lighthouse Pinnacle

    Koh Tao
    Beginner5-18 mWallAbove your levelLevel not known: check before you book

    Seen on 14% of dives in August

  13. Blacktip Grouper near Green RockPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    13. Green Rock

    Koh Tao
    Open Water4-32 mCave and cavernCoralAbove your levelLevel not known: check before you book

    Seen on 13% of dives in September

  14. Doublebar Rabbitfish, seen at Laem Thien Bay (photo taken elsewhere)Seen here: Doublebar RabbitfishPhoto: H. Schlegel, via Wikimedia Commons, PD · not taken at this site

    14. Laem Thien Bay

    Koh Tao
    Open Water4-14 mAbove your levelLevel not known: check before you book

    Seen on 13% of dives in July

  15. Mottled Lightfoot Crab near Junkyard ReefPhoto: (c) Kat Lim, some rights reserved (CC BY), via iNaturalist, CC BY

    15. Junkyard Reef

    Koh Tao
    Beginner7-12 mMacroAbove your levelLevel not known: check before you book

    Seen on 13% of dives in July

  16. Scissortail Sergeant near Mango BayPhoto: (c) Shane Austin, some rights reserved (CC BY), via iNaturalist, CC BY

    16. Mango Bay

    Koh Tao
    Beginner2-20 mCoralAbove your levelLevel not known: check before you book

    Seen on 12% of dives in August

  17. Diving Ko Tao, Thailand 1124 near Koh Nang YuanPhoto: Amada44, via Wikimedia Commons, CC BY SA 3.0

    17. Koh Nang Yuan

    Koh Tao
    Level not yet knownAbove your levelLevel not known: check before you book

    Seen on 11% of dives in October

  18. Smalltooth Emperor near No NamePhoto: (c) ig: underwater.logs, some rights reserved (CC BY), via iNaturalist, CC BY

    18. No Name

    Koh Tao
    Advanced Open Water11-30 mWreckAbove your levelLevel not known: check before you book

    Seen on 11% of dives in September

  19. Pillow Cushion Star near Shark IslandPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    19. Shark Island

    Koh Tao
    Open Water3-30 mBig animalsCoralWallAbove your levelLevel not known: check before you book

    Seen on 10% of dives in August

  20. Pearly Monocle Bream near Japanese GardensPhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    20. Japanese Gardens

    Koh Tao
    Beginner2-18 mCoralAbove your levelLevel not known: check before you book

    Seen on 9% of dives in October

  21. White-eyed Moray near Chumpon PinnaclePhoto: (c) portioid, some rights reserved (CC BY), via iNaturalist, CC BY

    21. Chumpon Pinnacle

    Koh Tao
    Advanced Open Water12-45 mAbove your levelLevel not known: check before you book

    Seen on 2% of dives in June

Citizen science

Turn every dive into ocean science

The ocean covers 70% of the planet but is the least-recorded place on Earth. Scientists can't be on every reef. Divers are.

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What happens to one sighting
A mobula ray swimming in open blue water, a remora on its back
Mobula rayMobula sp.15 m · Princess Alice Bank, Azores
  1. You log itWhat you saw, from your dive computer file or by hand.
  2. We check itPinned to the dive site and matched to a scientific name.
  3. Scientists can use itKept with its date, depth and place, in the format the big open species databases like GBIF use.

What scientists need, and how you help

  • More places

    Most ocean records come from a few coasts. Log every dive, even quiet sites.

  • What wasn't there

    Full dive logs show when a species goes missing. Log every animal, not just the highlights.

  • Same reefs, every year

    Change only shows up over years. Keep logging your home reef.

  • Names they can trust

    Lookalike species trip up records. Tag animals and add a photo.