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

Equals – Residency

6th sighting in Chatham Strait
Fluke of Equals
Equals Confirmed in the catalog @5325
May 27 – Jul 25, 2021 · Chatham Strait

Chatham Strait · May – Jul 2021

50 m
Deepest dive
2:02
Longest dive
32
Dives
Sightings
4
Days between first and last sighting
58

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 27, 2021101 m8.1°C27 m
Jun 18, 2021140 m11.3°C14 m
Jun 29, 202126 m10.9°C21 m
Jul 25, 202169 m12.0°C50 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 27, 2021 — seafloor 101 m (measured), deepest dive 27 m (modelled)May 27Jun 18, 2021 — seafloor 140 m (measured), deepest dive 14 m (modelled)Jun 18Jun 29, 2021 — seafloor 26 m (measured), deepest dive 21 m (modelled)Jun 29Jul 25, 2021 — seafloor 69 m (measured), deepest dive 50 m (modelled)Jul 25

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

Dives

50 m
Deepest dive
2:02
Longest dive
32
Dives
14 m
Avg dive depth
4
Sightings
58
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255050 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (69 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 · Jul 25, 2021

measured
Seafloor depth
69 m
Sea-surface temperature
12.0°C
Distance from shore
1.0 km

Across the residency · 4 sightings

measured
Seafloor depth
26 m – 140 m
Sea-surface temperature
8.1°C – 12.0°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 4 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.