Nudibranchs

1. Overheat ReefSandy Bay, Roatán, HondurasBoat · ReefBeginner-friendly20 mBest Nov–Sep · estimated3 mm
2. Reconnect House Reef BukabukaAmpana, Central Sulawesi, IndonesiaBoat · ReefBeginner-friendly18 mGood year-round · estimated3 mm
3. Elba Reef West (Fingers)Hala'ib, Red Sea, EgyptBoat · ReefIntermediate+20 mBest May–Dec · estimated3 mm
4. NAD LembehBitung, Lembeh Strait, IndonesiaBoat · MuckIntermediate+20 mGood year-round · estimated3 mm
5. Adam FaruGuraidhoo, MaldivesBoat · ReefBeginner-friendly25 mGood year-round · estimated3 mm
6. DivebaseMahibadhoo, MaldivesBoat · ReefIntermediate+25 mGood year-round · estimated3 mm
7. Exit 1 and 2Mahibadhoo, MaldivesBoat · ReefIntermediate+25 mGood year-round · estimated3 mm
8. Exit 10Mahibadhoo, MaldivesBoat · ReefBeginner-friendly25 mGood year-round · estimated3 mm
9. Housereef WestEydhafushi, MaldivesBoat · ReefBeginner-friendly12 mGood year-round · estimated3 mm
10. Maamigili BeyruMahibadhoo, MaldivesBoat · ReefBeginner-friendly25 mGood year-round · estimated3 mm
11. Deep SlopeLogon, Philippines Malapascua, PhilippinesBoat · ReefBeginner-friendly24 mBest Jan–May · estimated3 mm
12. St John's CavesShalātīn, Red Sea, EgyptBoat · CaveIntermediate+20 mBest May–Nov · estimated3 mm
13. Turtle Crossing ShallowSandy Bay, Roatán, HondurasBoat · ReefBeginner-friendly17 mBest Nov–Sep · estimated3 mm
14. Le PiramidiUstica, ItalyBoat · PinnacleBeginner-friendly40 mBest Jun–Sep · estimated3 mm
15. Blue HoleDahab, EgyptShore · Blue hole · Cave · WallAdvanced+6 m–30 mBest Jun–Oct3 mm
16. MV Mikhail Lermontov, wreckWaikawa, Marlborough, New ZealandBoat · WreckBeginner-friendly23 mBest Jan–Apr · estimated5 mm
17. Blue Grotto SpringWilliston, Florida Springs, United StatesShore · CaveBeginner-friendly30 mBest Apr–May · estimated
18. Monastery BeachCarmel-by-the-Sea, Monterey Bay, United StatesShore · Kelp · WallAdvanced+40 mBest Sep–Nov7 mm / dry
19. Point LobosCarmel-by-the-Sea, Monterey Bay, United StatesShore · KelpIntermediate+24 mBest Sep–Nov7 mm / dry
20. Flynn ReefCairns, Great Barrier Reef, AustraliaBoat · ReefBeginner-friendly15 mBest Jun–Nov3 mm
21. Lovers PointPacific Grove, Monterey Bay, United StatesShore · Kelp · PinnacleBeginner-friendly21 mBest Sep–Nov7 mm / dry
22. Breakwater CoveMonterey, Monterey Bay, United StatesShore · KelpBeginner-friendly18 mBest Sep–Nov7 mm / dry
23. Nudi Rock Raja AmpatRaja Ampat, IndonesiaBoat · WallIntermediate+24 mGood year-round · estimated3 mm
24. Lighthouse BommieGreat Barrier Reef, AustraliaBoat · PinnacleBeginner-friendly22 mBest Apr–Dec · estimated3 mm

Sources: Species occurrences: OBIS (CC BY 4.0), GBIF.org