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

Caldera – Residency

4th sighting in Chatham Strait
Fluke of Caldera
Caldera Confirmed in the catalog @6144
Aug 16 – Sep 16, 2020 · Chatham Strait

Chatham Strait · Aug – Sep 2020

59 m
Deepest dive
2:56
Longest dive
34
Dives
Sightings
5
Days between first and last sighting
31

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 16, 202076 m—42 m
Aug 16, 202076 m—59 m
Aug 16, 202039 m—28 m
Sep 6, 202050 m—21 m
Sep 16, 202061 m—54 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
Aug 16, 2020 — seafloor 76 m (measured), deepest dive 42 m (modelled)Aug 16Aug 16, 2020 — seafloor 76 m (measured), deepest dive 59 m (modelled)Aug 16Aug 16, 2020 — seafloor 39 m (measured), deepest dive 28 m (modelled)Aug 16Sep 6, 2020 — seafloor 50 m (measured), deepest dive 21 m (modelled)Sep 6Sep 16, 2020 — seafloor 61 m (measured), deepest dive 54 m (modelled)Sep 16

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

Dives

59 m
Deepest dive
2:56
Longest dive
34
Dives
21 m
Avg dive depth
5
Sightings
31
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010059 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (76 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 16, 2020

measured
Seafloor depth
76 m
Sea-surface temperature
—
Distance from shore
5.0 km

Across the residency · 5 sightings

measured
Seafloor depth
39 m – 76 m
Sea-surface temperature
—
Distance from shore
2.0 km – 6.0 km

Sources: GEBCO seafloor grid · 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.