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Glacier Bay & Icy Strait

Malthusian – Residency

48th sighting in Glacier Bay & Icy Strait
Fluke of Malthusian
Malthusian Confirmed in the catalog @18600
May 14 – Sep 30, 2025 · Glacier Bay & Icy Strait

Glacier Bay & Icy Strait · May – Sep 2025

146 m
Deepest dive
5:13
Longest dive
178
Dives
Sightings
12
Days between first and last sighting
139

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 14, 2025138 m7.7°C63 m
May 15, 2025133 m7.5°C79 m
May 21, 202557 m8.0°C32 m
May 21, 202558 m8.0°C24 m
May 27, 2025139 m8.2°C57 m
May 27, 202589 m8.2°C75 m
Jun 19, 2025139 m10.6°C113 m
Aug 2, 2025194 m14.3°C146 m
Aug 28, 202556 m15.2°C33 m
Sep 28, 202588 m12.2°C63 m
Sep 29, 202577 m11.7°C61 m
Sep 30, 2025141 m11.4°C26 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 14, 2025 — seafloor 138 m (measured), deepest dive 63 m (modelled)May 14May 15, 2025 — seafloor 133 m (measured), deepest dive 79 m (modelled)May 15May 21, 2025 — seafloor 57 m (measured), deepest dive 32 m (modelled)May 21May 21, 2025 — seafloor 58 m (measured), deepest dive 24 m (modelled)May 21May 27, 2025 — seafloor 139 m (measured), deepest dive 57 m (modelled)May 27May 27, 2025 — seafloor 89 m (measured), deepest dive 75 m (modelled)May 27Jun 19, 2025 — seafloor 139 m (measured), deepest dive 113 m (modelled)Jun 19Aug 2, 2025 — seafloor 194 m (measured), deepest dive 146 m (modelled)Aug 2Aug 28, 2025 — seafloor 56 m (measured), deepest dive 33 m (modelled)Aug 28Sep 28, 2025 — seafloor 88 m (measured), deepest dive 63 m (modelled)Sep 28Sep 29, 2025 — seafloor 77 m (measured), deepest dive 61 m (modelled)Sep 29Sep 30, 2025 — seafloor 141 m (measured), deepest dive 26 m (modelled)Sep 30

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

Dives

146 m
Deepest dive
5:13
Longest dive
178
Dives
23 m
Avg dive depth
12
Sightings
139
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150146 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (194 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 · Aug 2, 2025

measured
Seafloor depth
194 m
Sea-surface temperature
14.3°C
Distance from shore
—

Across the residency · 12 sightings

measured
Seafloor depth
56 m – 194 m
Sea-surface temperature
7.5°C – 15.2°C
Distance from shore
1.0 km – 2.0 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 12 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.