Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
North Pacific

Casper – Residency

Fluke of Casper
Casper Confirmed in the catalog @15707
Feb 28 – Mar 2, 2025 · North Pacific

North Pacific · Feb – Mar 2025

22 m
Deepest dive
1:23
Longest dive
8
Dives
Sightings
2
Days between first and last sighting
2

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 28, 202524 m—22 m
Mar 2, 2025-13 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
Feb 28, 2025 — seafloor 24 m (measured), deepest dive 22 m (modelled)Feb 28Mar 2, 2025 — seafloor -13 m (measured), deepest dive — (modelled)Mar 2

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

Dives

22 m
Deepest dive
1:23
Longest dive
8
Dives
15 m
Avg dive depth
2
Sightings
2
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255022 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (24 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 · Feb 28, 2025

measured
Seafloor depth
24 m
Sea-surface temperature
—
Distance from shore
1.0 km

Across the residency · 2 sightings

measured
Seafloor depth
-13 m – 24 m
Sea-surface temperature
—
Distance from shore
1.0 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 2 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.