Scuba Season
Critically Endangered· population decreasing· assessed 2025

Grey Nurse Shark

Carcharias taurus

Sighting evidence at HMAS Adelaide, Raja Ampat

Grey Nurse Shark

Photo: Luis P. B. · CC BY-NC

Evidence at this site

42 records within 25 km

Confidence: high

45 records within 10 km

Confidence: medium

Seasonality

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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