Scuba Season

Nurse Shark

Ginglymostoma cirratum

Sighting evidence at Salt River Canyon, US Virgin Islands

Nurse Shark

Photo: Sean · © all rights reserved

Nurse sharks are reliable residents of Salt River Canyon, resting in stacked piles beneath ledge overhangs during daylight hours before dispersing to hunt crustaceans and molluscs after dark. Their passive, bottom-oriented behaviour makes them ideal subjects for close observation, and experienced guides know exactly which ledges hold groups of three to eight individuals on any given dive. As apex predators in the shallow canyon ecosystem, their presence signals healthy trophic structure.

Evidence at this site

5 records within 25 km

Confidence: medium

Seasonality

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How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Also seen at other sites