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Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Lynn Canal & Stephens Passage

Magma – Residency

49th sighting in Lynn Canal & Stephens Passage
Fluke of Magma
Magma Confirmed in the catalog @17127
Jul 25 – Dec 15, 2021 · Lynn Canal & Stephens Passage

Lynn Canal & Stephens Passage · Jul – Dec 2021

98 m
Deepest dive
4:03
Longest dive
182
Dives
Sightings
14
Days between first and last sighting
143

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 25, 2021102 m13.4°C50 m
Jul 31, 2021120 m14.7°C97 m
Aug 1, 2021122 m14.7°C34 m
Aug 7, 2021112 m15.6°C69 m
Aug 15, 202186 m13.3°C71 m
Aug 24, 202179 m11.9°C39 m
Aug 26, 202184 m12.2°C38 m
Aug 29, 2021164 m11.9°C67 m
Aug 30, 2021126 m12.0°C33 m
Aug 31, 202194 m11.3°C70 m
Sep 7, 2021119 m12.0°C98 m
Oct 17, 202160 m6.9°C35 m
Nov 2, 202168 m6.5°C34 m
Dec 15, 202188 m4.0°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
Jul 25, 2021 — seafloor 102 m (measured), deepest dive 50 m (modelled)Jul 25Jul 31, 2021 — seafloor 120 m (measured), deepest dive 97 m (modelled)Aug 1, 2021 — seafloor 122 m (measured), deepest dive 34 m (modelled)Aug 7, 2021 — seafloor 112 m (measured), deepest dive 69 m (modelled)Aug 7Aug 15, 2021 — seafloor 86 m (measured), deepest dive 71 m (modelled)Aug 24, 2021 — seafloor 79 m (measured), deepest dive 39 m (modelled)Aug 26, 2021 — seafloor 84 m (measured), deepest dive 38 m (modelled)Aug 26Aug 29, 2021 — seafloor 164 m (measured), deepest dive 67 m (modelled)Aug 30, 2021 — seafloor 126 m (measured), deepest dive 33 m (modelled)Aug 31, 2021 — seafloor 94 m (measured), deepest dive 70 m (modelled)Aug 31Sep 7, 2021 — seafloor 119 m (measured), deepest dive 98 m (modelled)Oct 17, 2021 — seafloor 60 m (measured), deepest dive 35 m (modelled)Nov 2, 2021 — seafloor 68 m (measured), deepest dive 34 m (modelled)Nov 2Dec 15, 2021 — seafloor 88 m (measured), deepest dive 75 m (modelled)

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

Dives

98 m
Deepest dive
4:03
Longest dive
182
Dives
22 m
Avg dive depth
14
Sightings
143
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010098 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (119 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 7, 2021

measured
Seafloor depth
119 m
Sea-surface temperature
12.0°C
Distance from shore
2.0 km

Across the residency · 14 sightings

measured
Seafloor depth
60 m – 164 m
Sea-surface temperature
4.0°C – 15.6°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 14 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.