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Glacier Bay & Icy Strait

Arpeggio – Residency

209th sighting in Glacier Bay & Icy Strait
Fluke of Arpeggio
Arpeggio Confirmed in the catalog @4618
May 11 – Sep 11, 2026 · Glacier Bay & Icy Strait

A Whole Summer of Herring

Green water, thin light, the tide-lines exactly where I left them — glorious.

252 m
Deepest dive
9:56
Longest dive
628
Dives
Sightings
59
Days between first and last sighting
122

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 11, 202645 m7.7°C34 m
May 12, 2026132 m7.7°C28 m
May 17, 202659 m7.6°C51 m
May 18, 202673 m7.8°C28 m
May 19, 2026108 m8.1°C93 m
May 20, 2026139 m8.0°C68 m
May 22, 2026333 m8.0°C51 m
May 31, 2026-8 m8.4°C—
Jun 1, 2026241 m8.2°C58 m
Jun 2, 202660 m8.3°C28 m
Jun 5, 2026133 m9.8°C57 m
Jun 7, 2026130 m10.0°C52 m
Jun 11, 2026487 m9.8°C191 m
Jun 12, 2026406 m10.0°C252 m
Jun 15, 2026153 m9.4°C35 m
Jun 16, 202689 m9.5°C50 m
Jun 17, 2026401 m9.6°C192 m
Jun 18, 2026164 m9.5°C75 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 11, 2026 — seafloor 45 m (measured), deepest dive 34 m (modelled)May 11May 12, 2026 — seafloor 132 m (measured), deepest dive 28 m (modelled)May 17, 2026 — seafloor 59 m (measured), deepest dive 51 m (modelled)May 18, 2026 — seafloor 73 m (measured), deepest dive 28 m (modelled)May 19, 2026 — seafloor 108 m (measured), deepest dive 93 m (modelled)May 20, 2026 — seafloor 139 m (measured), deepest dive 68 m (modelled)May 22, 2026 — seafloor 333 m (measured), deepest dive 51 m (modelled)May 31, 2026 — seafloor -8 m (measured), deepest dive — (modelled)Jun 1, 2026 — seafloor 241 m (measured), deepest dive 58 m (modelled)Jun 2, 2026 — seafloor 60 m (measured), deepest dive 28 m (modelled)Jun 5, 2026 — seafloor 133 m (measured), deepest dive 57 m (modelled)Jun 5Jun 7, 2026 — seafloor 130 m (measured), deepest dive 52 m (modelled)Jun 11, 2026 — seafloor 487 m (measured), deepest dive 191 m (modelled)Jun 12, 2026 — seafloor 406 m (measured), deepest dive 252 m (modelled)Jun 15, 2026 — seafloor 153 m (measured), deepest dive 35 m (modelled)Jun 16, 2026 — seafloor 89 m (measured), deepest dive 50 m (modelled)Jun 17, 2026 — seafloor 401 m (measured), deepest dive 192 m (modelled)Jun 18, 2026 — seafloor 164 m (measured), deepest dive 75 m (modelled)Jun 19, 2026 — seafloor 139 m (measured), deepest dive 45 m (modelled)Jun 21, 2026 — seafloor 556 m (measured), deepest dive 71 m (modelled)Jun 22, 2026 — seafloor 197 m (measured), deepest dive 41 m (modelled)Jun 22Jun 24, 2026 — seafloor 257 m (measured), deepest dive 97 m (modelled)Jun 29, 2026 — seafloor 154 m (measured), deepest dive 113 m (modelled)Jul 3, 2026 — seafloor 597 m (measured), deepest dive 54 m (modelled)Jul 4, 2026 — seafloor 241 m (measured), deepest dive 100 m (modelled)Jul 12, 2026 — seafloor 68 m (measured), deepest dive 52 m (modelled)Jul 18, 2026 — seafloor 253 m (measured), deepest dive 42 m (modelled)Jul 19, 2026 — seafloor 80 m (measured), deepest dive 54 m (modelled)Jul 20, 2026 — seafloor 110 m (measured), deepest dive 76 m (modelled)Jul 22, 2026 — seafloor 436 m (measured), deepest dive 48 m (modelled)Jul 28, 2026 — seafloor 71 m (measured), deepest dive 41 m (modelled)Jul 28Jul 29, 2026 — seafloor 27 m (measured), deepest dive 23 m (modelled)Jul 30, 2026 — seafloor 133 m (measured), deepest dive 52 m (modelled)Aug 3, 2026 — seafloor 46 m (measured), deepest dive 37 m (modelled)Aug 9, 2026 — seafloor 79 m (measured), deepest dive 58 m (modelled)Aug 10, 2026 — seafloor 78 m (measured), deepest dive 72 m (modelled)Aug 11, 2026 — seafloor 85 m (measured), deepest dive 50 m (modelled)Aug 12, 2026 — seafloor 91 m (measured), deepest dive 68 m (modelled)Aug 13, 2026 — seafloor 82 m (measured), deepest dive 53 m (modelled)Aug 14, 2026 — seafloor 98 m (measured), deepest dive 69 m (modelled)Aug 15, 2026 — seafloor 83 m (measured), deepest dive 47 m (modelled)Aug 15Aug 16, 2026 — seafloor 96 m (measured), deepest dive 45 m (modelled)Aug 17, 2026 — seafloor 116 m (measured), deepest dive 101 m (modelled)Aug 18, 2026 — seafloor 120 m (measured), deepest dive 41 m (modelled)Aug 19, 2026 — seafloor 91 m (measured), deepest dive 58 m (modelled)Aug 20, 2026 — seafloor 114 m (measured), deepest dive 35 m (modelled)Aug 21, 2026 — seafloor 71 m (measured), deepest dive 36 m (modelled)Aug 25, 2026 — seafloor 130 m (measured), deepest dive 70 m (modelled)Aug 27, 2026 — seafloor 128 m (measured), deepest dive 89 m (modelled)Aug 31, 2026 — seafloor 74 m (measured), deepest dive 60 m (modelled)Sep 1, 2026 — seafloor 96 m (measured), deepest dive 58 m (modelled)Sep 1Sep 2, 2026 — seafloor 72 m (measured), deepest dive 60 m (modelled)Sep 3, 2026 — seafloor 141 m (measured), deepest dive 37 m (modelled)Sep 4, 2026 — seafloor 133 m (measured), deepest dive 62 m (modelled)Sep 6, 2026 — seafloor 139 m (measured), deepest dive 18 m (modelled)Sep 9, 2026 — seafloor 96 m (measured), deepest dive 47 m (modelled)Sep 10, 2026 — seafloor 146 m (measured), deepest dive 122 m (modelled)Sep 10, 2026 — seafloor 72 m (measured), deepest dive 55 m (modelled)Sep 11, 2026 — seafloor 115 m (measured), deepest dive 98 m (modelled)

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

Dives

252 m
Deepest dive
9:56
Longest dive
628
Dives
24 m
Avg dive depth
59
Sightings
122
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0150300252 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (406 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 · Jun 12, 2026

measured
Seafloor depth
406 m
Sea-surface temperature
10.0°C
Distance from shore
1.0 km

Across the residency · 59 sightings

measured
Seafloor depth
-8 m – 597 m
Sea-surface temperature
7.6°C – 15.7°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 59 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.