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Lynn Canal & Stephens Passage

Magma – Residency

59th sighting in Lynn Canal & Stephens Passage
Fluke of Magma
Magma Confirmed in the catalog @17127
Jun 2 – Nov 13, 2023 · Lynn Canal & Stephens Passage

Lynn Canal & Stephens Passage · Jun – Nov 2023

179 m
Deepest dive
5:46
Longest dive
180
Dives
Sightings
15
Days between first and last sighting
164
Deepest dive on record
179 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 2, 2023112 m8.4°C43 m
Jun 22, 202394 m11.5°C60 m
Jul 17, 2023325 m13.5°C71 m
Jul 20, 202355 m11.7°C41 m
Jul 29, 202344 m13.5°C19 m
Aug 24, 2023132 m11.9°C44 m
Sep 6, 202394 m12.9°C31 m
Sep 7, 202372 m13.1°C60 m
Sep 10, 2023127 m12.8°C105 m
Sep 10, 202376 m12.8°C34 m
Sep 13, 202383 m12.5°C63 m
Sep 18, 202362 m11.0°C16 m
Sep 23, 2023420 m10.2°C179 m
Oct 31, 202398 m8.0°C56 m
Nov 13, 202330 m7.9°C28 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 2, 2023 — seafloor 112 m (measured), deepest dive 43 m (modelled)Jun 2Jun 22, 2023 — seafloor 94 m (measured), deepest dive 60 m (modelled)Jul 17, 2023 — seafloor 325 m (measured), deepest dive 71 m (modelled)Jul 20, 2023 — seafloor 55 m (measured), deepest dive 41 m (modelled)Jul 20Jul 29, 2023 — seafloor 44 m (measured), deepest dive 19 m (modelled)Aug 24, 2023 — seafloor 132 m (measured), deepest dive 44 m (modelled)Sep 6, 2023 — seafloor 94 m (measured), deepest dive 31 m (modelled)Sep 6Sep 7, 2023 — seafloor 72 m (measured), deepest dive 60 m (modelled)Sep 10, 2023 — seafloor 127 m (measured), deepest dive 105 m (modelled)Sep 10, 2023 — seafloor 76 m (measured), deepest dive 34 m (modelled)Sep 10Sep 13, 2023 — seafloor 83 m (measured), deepest dive 63 m (modelled)Sep 18, 2023 — seafloor 62 m (measured), deepest dive 16 m (modelled)Sep 23, 2023 — seafloor 420 m (measured), deepest dive 179 m (modelled)Sep 23Oct 31, 2023 — seafloor 98 m (measured), deepest dive 56 m (modelled)Nov 13, 2023 — seafloor 30 m (measured), deepest dive 28 m (modelled)

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

Dives

179 m
Deepest dive
5:46
Longest dive
180
Dives
21 m
Avg dive depth
15
Sightings
164
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200179 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (420 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 · Sep 23, 2023

measured
Seafloor depth
420 m
Sea-surface temperature
10.2°C
Distance from shore
2.0 km

Across the residency · 15 sightings

measured
Seafloor depth
30 m – 420 m
Sea-surface temperature
7.9°C – 13.5°C
Distance from shore
1.0 km – 4.0 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 15 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.