Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Chatham Strait

WidowMaker – Residency

10th sighting in Chatham Strait
Fluke of WidowMaker
WidowMaker Confirmed in the catalog @6371
Apr 29 – Jun 13, 2018 · Chatham Strait

Chatham Strait · Apr – Jun 2018

190 m
Deepest dive
5:19
Longest dive
110
Dives
Sightings
6
Days between first and last sighting
45

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 29, 2018159 m5.6°C102 m
Apr 29, 2018224 m5.5°C104 m
Apr 30, 2018224 m5.7°C190 m
May 2, 2018224 m6.1°C67 m
May 3, 2018194 m6.0°C75 m
Jun 13, 2018535 m10.0°C114 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
Apr 29, 2018 — seafloor 159 m (measured), deepest dive 102 m (modelled)Apr 29Apr 29, 2018 — seafloor 224 m (measured), deepest dive 104 m (modelled)Apr 29Apr 30, 2018 — seafloor 224 m (measured), deepest dive 190 m (modelled)Apr 30May 2, 2018 — seafloor 224 m (measured), deepest dive 67 m (modelled)May 2May 3, 2018 — seafloor 194 m (measured), deepest dive 75 m (modelled)May 3Jun 13, 2018 — seafloor 535 m (measured), deepest dive 114 m (modelled)Jun 13

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

Dives

190 m
Deepest dive
5:19
Longest dive
110
Dives
32 m
Avg dive depth
6
Sightings
45
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200190 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (224 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 · Apr 30, 2018

measured
Seafloor depth
224 m
Sea-surface temperature
5.7°C
Distance from shore
2.0 km

Across the residency · 6 sightings

measured
Seafloor depth
159 m – 535 m
Sea-surface temperature
5.5°C – 10.0°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 6 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.