Mathsy – Residency
16th sighting in Iceland
Mathsy @16938
Aug 6 – Sep 6, 2025 · Iceland
Iceland · Aug – Sep 2025
107 m
Deepest dive
3:21
Longest dive
48
Dives
- Sightings
- 4
- Days between first and last sighting
- 30
- Deepest dive on record
- 107 m · this residency
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Aug 6, 2025 | 120 m | — | 107 m |
| Aug 21, 2025 | 88 m | — | 64 m |
| Aug 22, 2025 | 125 m | — | 66 m |
| Sep 6, 2025 | 128 m | — | 47 m |
Seafloor and sea temperature measured · ✳ dives modelled
Deepest dive against the seafloor, per sighting
Seafloor · measured Deepest dive · modelledDepth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.
Dives
107 m
Deepest dive
3:21
Longest dive
48
Dives
27 m
Avg dive depth
4
Sightings
30
Days first → last
Dive metrics are modelled within real depth limits — not measured
Get actual dive data with Risa Deep →Dive profile
modelledDepth shaped by the seafloor limit here (120 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 6, 2025
measured- Seafloor depth
- 120 m
- Sea-surface temperature
- —
- Distance from shore
- 3.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 88 m – 128 m
- Sea-surface temperature
- —
- Distance from shore
- 2.0 km – 3.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 4 catalogued encounters on Happywhale.