Least Concern· population decreasing· assessed 2024

Denise's Pygmy Seahorse

Hippocampus denise

Sighting evidence at Cobrador Island, Romblon

Denise's pygmy seahorses colonize the large sea fans along Cobrador's wall, their tiny orange bodies camouflaged perfectly among the fan's polyps. At under 2 cm they are among the smallest vertebrates on earth and are easily overlooked without a knowledgeable guide. Pairs or small groups are typically found at depths between 18 and 35 meters on Muricella and Annella sea fans.

Evidence at this site

28 records within 25 km

Confidence: medium

Last confirmed May 2026

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.

Denise's Pygmy Seahorse

Evidence at this site

Seasonality

Also seen at other sites