Location: Romblon Island
Depth: shallow / medium depth
Cover Photo: Liang Fu
Scientific Name: Cyerce elegans Bergh, 1870 (before known as Cyerce sp. 3 NSSI2)
Group: Butterfly Seaslugs – Hermaeidae
Family: Caliphyllidae (Sacoglossa)
Cyerce elegans: The Pink Jewel of Romblon’s Reefs
Cyerce elegans stands out as one of the most visually striking butterfly seaslugs in the Indo-Pacific, and recent taxonomic revelations have made this species even more remarkable. This stunning pink sacoglossan, belonging to the family Caliphyllidae, has reclaimed its rightful scientific identity after years of taxonomic confusion.
A Pink Revolution in Marine Taxonomy
The story of Cyerce elegans represents a fascinating chapter in marine biology that directly impacts our diving resort in Romblon. For a long time, the diving community and researchers identified a translucent golden seaslug as Cyerce elegans. Meanwhile, this beautiful pink species was known in scientific literature as Cyerce sp. 3 (NSSI2). However, groundbreaking research published recently has revealed that the true C. elegans is actually the gorgeous pink specimen that underwater photography enthusiasts have been capturing in the waters around Romblon. The golden species has now been properly recognized as Cyerce basi, giving the pink beauty back its original scientific name.
The Pink Phenomenon
What sets Cyerce elegans apart from its relatives is its distinctive pink coloration, which creates an almost ethereal appearance underwater. This remarkable hue makes it a coveted subject for macro photographers visiting our diving resort.
Unique Behavioral Characteristics
Cyerce elegans exhibits fascinating behavioral patterns that make it particularly rewarding for patient observers during scuba diving expeditions. Unlike some of its more secretive relatives, this species can occasionally be observed in more open areas of the reef, though it still requires careful searching among algal beds and soft coral formations.
Prime Diving Locations in Romblon
The coral-rich waters surrounding Romblon provide ideal conditions for Cyerce elegans populations to thrive. Our diving resort’s local dive sites offer multiple opportunities to encounter this species, particularly in areas with seagrass, near reef walls and coral gardens. The consistent water temperatures and nutrient-rich conditions around Romblon create perfect habitat for these specialized feeders.
Photography Tips and Techniques
For underwater photography enthusiasts, Cyerce elegans presents unique opportunities and challenges. Its pink coloration photographs beautifully against the varied backgrounds of Romblon’s reefs, but requires specific lighting techniques to capture its true colors accurately.
Research and Discovery Significance
The recent taxonomic clarification of Cyerce elegans highlights the dynamic nature of marine science and the importance of locations like Romblon in advancing our understanding of marine biodiversity. This species serves as a perfect example of how careful observation, detailed photography, and systematic research can lead to significant scientific breakthroughs.
For guests at our diving resort in Romblon, encounters with the true Cyerce elegans offer a chance to witness marine biology history in the making. Each sighting contributes to our growing knowledge of this species’ distribution, behavior, and ecological role in the Indo-Pacific reef ecosystem.
Conservation Through Observation
The story of Cyerce elegans demonstrates how scuba diving tourism and underwater photography can contribute meaningfully to marine conservation and research. By documenting and sharing encounters with this species, visitors to our diving resort help build the scientific record that supports conservation efforts throughout the region.














