Spotted Eagle Ray
Aetobatus narinari
Sighting evidence at The Crevice, Guam, Mariana Islands (Guam & Saipan)
Photo: michel candel · CC BY-NC-SA
Spotted eagle rays use the thermocline inside The Crevice as a resting and orientation layer, hovering nearly motionless with wings spread wide in the reduced current while the temperature differential delivers a steady supply of oxygen-rich cool water across their gills. Encounters inside the slot itself are one of the most distinctive features of this site — nowhere else in Guam can a diver be inside a chimney with eagle rays at arm's length.
Evidence at this site
No confirmed records on file at this site
Spotted Eagle Ray is listed as a curated species here based on historical reports.