Northern Sea Urchin

1. Strytan Hydrothermal ChimneyAkureyri, Silfra Fissure, IcelandBoat · PinnacleAdvanced+40 mBest Jun–Sep · estimated7 mm / dry
2. Vanderbilt ReefJuneau, Alaska, United StatesBoat · ReefAdvanced+26 mBest Jun–Sep · estimated
3. Aasiaat NugguatAasiaat, GreenlandBoat · ReefAdvanced+20 mBest Jun–Sep · estimated7 mm / dry
4. Beaver TailNova Scotia, CanadaBoat · ReefIntermediate+16 mBest Jun–Aug · estimated5 mm
5. Ada K. DamonIpswich, New England, United StatesWreckBeginner-friendly2 mBest Jun–Sep · estimated5 mm
6. Douglas RockAlaska, CanadaBoat · ReefAdvanced+26 mBest Jun–Sep · estimated7 mm / dry
7. Boat GraveyardAlaska, United StatesBoat · WreckAdvanced+18 mBest Jun–Sep · estimated7 mm / dry
8. Hastings ReefAlaska, CanadaBoat · ReefAdvanced+25 mBest Jun–Sep · estimated7 mm / dry
9. Haswell ReefAlaska, CanadaBoat · ReefAdvanced+24 mBest Jun–Sep · estimated7 mm / dry
10. Observatory RockAlaska, CanadaBoat · ReefAdvanced+26 mBest Jun–Sep · estimated7 mm / dry
11. Mill Cove MarinaMillview, Nova Scotia, CanadaShore · Channel · WallEstimated: Beginner-friendly12.8 mBest Jun–Aug · estimated7 mm / dry
12. Escoumins - Crique OuestLes Escoumins, Quebec, CanadaDrift · WallEstimated: Advanced+40 mBest Jun–Sep · estimated7 mm / dry
13. Les Escoumins - Baie des anémonesLes Escoumins, Quebec, CanadaDrift · WallEstimated: Intermediate+30 mBest Jun–Sep · estimated7 mm / dry
14. Duck Island Isles of ShoalsNew Castle, New Hampshire, United StatesPinnacleEstimated: Beginner-friendly12.2 mBest Jun–Sep · estimated5 mm
15. Isles of Shoals Duck Island and Shag RockNew Castle, New Hampshire, United StatesPinnacleEstimated: Beginner-friendly12.2 mBest Jun–Sep · estimated5 mm
16. SaltstraumenLøding, Nordland, NorwayAdvanced+12 m–30 mBest Jun–Sep · estimated7 mm / dry
17. Stage Fort Park - GloucesterGloucester, New Hampshire, United StatesShoreEstimated: Beginner-friendly6.1 mBest Jun–Sep · estimated5 mm
18. Fort StarkNew Castle, New Hampshire, United StatesShoreEstimated: Beginner-friendly7.6 mBest Jun–Sep · estimated5 mm
19. Mermaid CoveMadeira Park, British Columbia, CanadaShore · WallBest May–Sep · estimated7 mm / dry
20. HMCS Cape Breton (ARE 100)Gabriola, British Columbia, CanadaWreckBest May–Sep · estimated7 mm / dry
21. Burns PointShad Bay, Nova Scotia, CanadaShore · WallBest Jun–Aug · estimated7 mm / dry
22. Bear CoveHerring Cove, Nova Scotia, CanadaShore · WreckBest Jun–Aug · estimated7 mm / dry
23. Grand NarrowsEskasoni 3, Nova Scotia, CanadaShore · Channel · Drift · WreckBest Jun–Aug · estimated5 mm
24. Nubble LightYork Beach, New Hampshire, United StatesEstimated: Intermediate+24.4 mBest Jun–Sep · estimated5 mm

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