Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Glacier Bay & Icy Strait

MommasBoy – Residency

49th sighting in Glacier Bay & Icy Strait
Fluke of MommasBoy
MommasBoy Confirmed in the catalog @16812
Jun 19 – Jul 19, 2025 · Glacier Bay & Icy Strait

Glacier Bay & Icy Strait · Jun – Jul 2025

170 m
Deepest dive
5:44
Longest dive
105
Dives
Sightings
8
Days between first and last sighting
30

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 19, 2025262 m10.4°C121 m
Jun 25, 20258 m10.6°C7 m
Jun 30, 2025136 m11.8°C114 m
Jul 1, 202590 m11.8°C69 m
Jul 2, 2025199 m11.8°C170 m
Jul 4, 202586 m12.4°C63 m
Jul 16, 2025132 m12.4°C78 m
Jul 19, 2025103 m12.4°C49 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Jun 19, 2025 — seafloor 262 m (measured), deepest dive 121 m (modelled)Jun 19Jun 25, 2025 — seafloor 8 m (measured), deepest dive 7 m (modelled)Jun 25Jun 30, 2025 — seafloor 136 m (measured), deepest dive 114 m (modelled)Jun 30Jul 1, 2025 — seafloor 90 m (measured), deepest dive 69 m (modelled)Jul 1Jul 2, 2025 — seafloor 199 m (measured), deepest dive 170 m (modelled)Jul 2Jul 4, 2025 — seafloor 86 m (measured), deepest dive 63 m (modelled)Jul 4Jul 16, 2025 — seafloor 132 m (measured), deepest dive 78 m (modelled)Jul 16Jul 19, 2025 — seafloor 103 m (measured), deepest dive 49 m (modelled)Jul 19

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

170 m
Deepest dive
5:44
Longest dive
105
Dives
25 m
Avg dive depth
8
Sightings
30
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200170 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (199 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Jul 2, 2025

measured
Seafloor depth
199 m
Sea-surface temperature
11.8°C
Distance from shore
—

Across the residency · 8 sightings

measured
Seafloor depth
8 m – 262 m
Sea-surface temperature
10.4°C – 12.4°C
Distance from shore
1.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 8 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.