Field notes
Encounter profile
Manually classified in SNAP.
Pteraeolidia semperi - Pteraeolidia is a genus of sea slugs, aeolid, marine gastropod molluscs in the family Facelinidae.
Species profile
Blue Dragon
Pteraeolidia semperi
Manually classified in SNAP.
21
Media items
Photos and videos
15
Dives
Distinct encounters
6
Locations
2 trips
Archive ecology
Conditions where we found it
SNAP observations, not the species’ full biological range.
- Depth evidence
- 8.3–22.4m
- Median 16.0m · n=7
- Water temperature
- 24.0–29.0°C
- Median 27.0°C · n=20
Depth basis: 0 recorded, 7 profile-estimated, 13 contextual.
An early signal
20 environment-linked observations are available so far. More encounters will show whether a repeatable pattern emerges.
View distributions & comparisons▾
Repeatable archive pattern · 22 observations / 15 dives
Observed depth distributionmiddle 50%: 11.7–16.5m
Calendar-quarter observations
Apr–Jun9
Jul–Sep13
Camera-clock comparison
Morning · 6Night · 15
- • These distributions describe photographs in SNAP, not a species’ complete biological range.
- • Depth distributions use recorded or capture-time profile estimates; dive-average and maximum context is excluded.
- • Time-of-day groups use the camera clock and are not corrected for sunrise, sunset, or timezone.
Creature trail
A life through time and place
#15 · Sep 24, 2026
Manta Sandy
Raja Ampat · Asia 2026
8.3m · Estimated at capture time27.0°C
#14 · Sep 23, 2026
Melissa's Garden
Raja Ampat · Asia 2026
14.8m · Estimated at capture time27.0°C
#13 · Sep 14, 2026
Rhino City
Ambon · Asia 2026
22.4m · Estimated at capture time24.0°C
#12 · Sep 13, 2026
Kampung Baru 2
Ambon · Asia 2026
16.3m · Estimated at capture time24.0°C
Species field guide
Notes, taxonomy, identification & seasonality
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Species field guide
Notes, taxonomy, identification & seasonality
Curated encounters
Key encounters
Selected favorites and highly rated encounters.
Archive
All media records
21 media items
Optional context
Curious beyond the photographs?
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Life found nearby
Species photographed on the same dives come first, followed by close taxonomic neighbours.
Caprella sp.
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Anemone Porcelain Crab
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