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

Casper – Residency

5th sighting in Chatham Strait
Fluke of Casper
Casper Confirmed in the catalog @26833
Jun 12 – Aug 16, 2019 · Chatham Strait

Chatham Strait · Jun – Aug 2019

64 m
Deepest dive
2:44
Longest dive
62
Dives
Sightings
5
Days between first and last sighting
65

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 12, 201954 m9.2°C34 m
Jul 19, 201926 m12.5°C23 m
Aug 13, 2019129 m13.0°C64 m
Aug 14, 2019106 m13.3°C28 m
Aug 16, 201946 m13.3°C34 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 12, 2019 — seafloor 54 m (measured), deepest dive 34 m (modelled)Jun 12Jul 19, 2019 — seafloor 26 m (measured), deepest dive 23 m (modelled)Jul 19Aug 13, 2019 — seafloor 129 m (measured), deepest dive 64 m (modelled)Aug 13Aug 14, 2019 — seafloor 106 m (measured), deepest dive 28 m (modelled)Aug 14Aug 16, 2019 — seafloor 46 m (measured), deepest dive 34 m (modelled)Aug 16

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

Dives

64 m
Deepest dive
2:44
Longest dive
62
Dives
17 m
Avg dive depth
5
Sightings
65
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010064 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (129 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 · Aug 13, 2019

measured
Seafloor depth
129 m
Sea-surface temperature
13.0°C
Distance from shore
2.0 km

Across the residency · 5 sightings

measured
Seafloor depth
26 m – 129 m
Sea-surface temperature
9.2°C – 13.3°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 5 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.