scubaseason

Manta Ray

Mobula alfredi

Sighting evidence at Nosy Mitsio, Nosy Be

Manta Ray

Photo: Luis P. B. · CC BY-NC

Reef manta rays visit the cleaning stations on Nosy Mitsio's exposed pinnacles May through October, circling in stacked queues as wrasses and angelfish remove parasites from their gills and skin. With a wingspan reaching 5 metres, reef mantas are the smaller of the two manta species — distinguished from oceanic mantas by shoulder patches rather than uniform dark backs. Individual rays are identified by researchers via unique ventral spot patterns and contribute to a population tracked across the western Indian Ocean.

Evidence at this site

No confirmed records on file at this site

Manta Ray 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