Scuba Season
Least Concern· population increasing· assessed 2025

Green sea turtle

Chelonia mydas

Sighting evidence at Zamami Turtle Reef

Green sea turtle

Photo: MARC MARTIN SOLA · CC BY-NC

The Kerama Islands hold one of Japan's largest green turtle nesting populations. Zamami's females nest from May to August; juveniles and adults forage on seagrass and algae beds year-round, making turtle encounters near-certain on every dive.

Evidence at this site

No confirmed records on file at this site

Green sea turtle is listed as a curated species here based on historical reports.

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