Halfandhalf – Residency
42nd sighting in Iceland
Halfandhalf @82722
Apr 24 – Aug 7, 2025 · Iceland
Iceland · Apr – Aug 2025
37 m
Deepest dive
1:45
Longest dive
157
Dives
- Sightings
- 8
- Days between first and last sighting
- 105
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Apr 24, 2025 | 35 m | 5.7°C | 23 m |
| Apr 28, 2025 | 26 m | 7.3°C | 23 m |
| Apr 28, 2025 | 44 m | 7.4°C | 30 m |
| May 4, 2025 | 26 m | 8.2°C | 23 m |
| Jun 22, 2025 | 45 m | 10.0°C | 15 m |
| Jul 9, 2025 | 41 m | 11.0°C | 37 m |
| Jul 26, 2025 | 45 m | 12.3°C | 35 m |
| Aug 7, 2025 | 24 m | 11.6°C | 22 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
37 m
Deepest dive
1:45
Longest dive
157
Dives
13 m
Avg dive depth
8
Sightings
105
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 (41 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jul 9, 2025
measured- Seafloor depth
- 41 m
- Sea-surface temperature
- 11.0°C
- Distance from shore
- 5.0 km
Across the residency · 8 sightings
measured- Seafloor depth
- 24 m – 45 m
- Sea-surface temperature
- 5.7°C – 12.3°C
- Distance from shore
- 1.0 km – 13.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 8 catalogued encounters on Happywhale.