Rock-boring Urchin

1. TicketPapetoai, Society Islands, French Polynesia25 mIntermediate+Best Jan–Nov3 mm
2. Cabilao IslandLoon, Bohol, PhilippinesDrift · Reef · WallBest Nov–May3 mm
3. Sharm el Lole CampAl Quşayr, Red Sea, EgyptBeginner-friendlyBest Mar–May3 mm
4. South Kihei Boat Ramp Shore DiveWailea, Hawaii, United StatesReefGood year-round3 mm
5. 3 Rocks (Sharm rock)Dibba Al-Fujairah, Fujairah, United Arab EmiratesReefBest Apr–Nov3 mm
6. Polo Beach Middle ReefWailea, Hawaii, United StatesReefGood year-round3 mm
7. Corsair WWIINiu Valley, Hawaii, United StatesWreckGood year-round3 mm
8. YO-257 & San PedroWaikīkī, Hawaii, United StatesWreckGood year-round3 mm
9. White Rock NorthWailea-Makena, Hawaii, United StatesReefGood year-round3 mm
10. Hidden ReefGili Air, Lombok, IndonesiaDrift · ReefBest Mar–Nov3 mm
11. MagnetSekotong Tengah, Lombok, IndonesiaWallBest Mar–Nov3 mm
12. Gili SarangSekotong Tengah, Lombok, IndonesiaReefBest Mar–Nov3 mm
13. Kadena North StepsKadena, Okinawa, JapanDrift · ReefBest May3 mm
14. Research ReefSan Fernando, Luzon, PhilippinesReefBest Jan–Apr3 mm
15. Keawakapu SouthWailea, Hawaii, United StatesReefGood year-round3 mm
16. Whiterock SouthWailea-Makena, Hawaii, United StatesReefGood year-round3 mm
17. Water Treatment PlantChatan, Okinawa, JapanReefBest May3 mm
18. Kewalo PipeAla Moana - Kakaʻako, Hawaii, United StatesReefGood year-round3 mm
19. BluewaterKhawr Fakkān, Fujairah, United Arab EmiratesDriftBest Apr–Nov3 mm
20. LcuMā‘ili, Hawaii, United StatesWreckGood year-round3 mm
21. Koh RokKo Lanta, Koh Lanta, ThailandReefGood year-round3 mm
22. Cape Hedo DomeKunigami, Okinawa, JapanCave · Drift · WallBest May3 mm
23. Shark IslandKhawr Fakkān, Fujairah, United Arab EmiratesReefBest Apr–Nov3 mm
24. Earl of ShaftesburyAmbalangoda, Southern Sri Lanka, Sri LankaWreckBest Dec–Oct3 mm

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