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Glacier Bay & Icy Strait

Malthusian – Residency

60th sighting in Glacier Bay & Icy Strait
Fluke of Malthusian
Malthusian Confirmed in the catalog @18600
May 18 – Sep 3, 2026 · Glacier Bay & Icy Strait

Cold Water, Old Bones, Good Season

Whole summer in the green shallows I could chart by taste alone.

133 m
Deepest dive
5:05
Longest dive
156
Dives
Sightings
13
Days between first and last sighting
108

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 18, 202671 m7.8°C42 m
May 19, 2026108 m8.1°C98 m
May 21, 2026241 m7.9°C58 m
May 31, 20263 m8.4°C3 m
Jun 1, 2026122 m8.3°C35 m
Jun 2, 2026139 m8.2°C27 m
Jun 6, 202679 m10.1°C46 m
Jun 15, 2026177 m9.4°C100 m
Jun 16, 202698 m9.5°C73 m
Jun 22, 2026197 m11.4°C60 m
Jul 23, 2026215 m13.4°C133 m
Jul 28, 202671 m13.3°C32 m
Sep 3, 202655 m13.2°C32 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
May 18, 2026 — seafloor 71 m (measured), deepest dive 42 m (modelled)May 18May 19, 2026 — seafloor 108 m (measured), deepest dive 98 m (modelled)May 21, 2026 — seafloor 241 m (measured), deepest dive 58 m (modelled)May 31, 2026 — seafloor 3 m (measured), deepest dive 3 m (modelled)May 31Jun 1, 2026 — seafloor 122 m (measured), deepest dive 35 m (modelled)Jun 2, 2026 — seafloor 139 m (measured), deepest dive 27 m (modelled)Jun 6, 2026 — seafloor 79 m (measured), deepest dive 46 m (modelled)Jun 6Jun 15, 2026 — seafloor 177 m (measured), deepest dive 100 m (modelled)Jun 16, 2026 — seafloor 98 m (measured), deepest dive 73 m (modelled)Jun 22, 2026 — seafloor 197 m (measured), deepest dive 60 m (modelled)Jun 22Jul 23, 2026 — seafloor 215 m (measured), deepest dive 133 m (modelled)Jul 28, 2026 — seafloor 71 m (measured), deepest dive 32 m (modelled)Sep 3, 2026 — seafloor 55 m (measured), deepest dive 32 m (modelled)Sep 3

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

Dives

133 m
Deepest dive
5:05
Longest dive
156
Dives
21 m
Avg dive depth
13
Sightings
108
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150133 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (215 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 23, 2026

measured
Seafloor depth
215 m
Sea-surface temperature
13.4°C
Distance from shore
1.0 km

Across the residency · 13 sightings

measured
Seafloor depth
3 m – 241 m
Sea-surface temperature
7.8°C – 13.4°C
Distance from shore
1.0 km – 6.0 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 13 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.