Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Monterey Bay

Milk Dud – Residency

4th sighting in Monterey Bay
Fluke of Milk Dud
Milk Dud Confirmed in the catalog @137927
Apr 3 – 7, 2025 · Monterey Bay

Monterey Bay · Apr 2025

60 m
Deepest dive
2:39
Longest dive
38
Dives
Sightings
4
Days between first and last sighting
4

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 3, 202560 m—27 m
Apr 4, 202562 m—46 m
Apr 5, 202568 m—60 m
Apr 7, 202541 m—33 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 3, 2025 — seafloor 60 m (measured), deepest dive 27 m (modelled)Apr 3Apr 4, 2025 — seafloor 62 m (measured), deepest dive 46 m (modelled)Apr 4Apr 5, 2025 — seafloor 68 m (measured), deepest dive 60 m (modelled)Apr 5Apr 7, 2025 — seafloor 41 m (measured), deepest dive 33 m (modelled)Apr 7

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

Dives

60 m
Deepest dive
2:39
Longest dive
38
Dives
19 m
Avg dive depth
4
Sightings
4
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010060 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (68 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 5, 2025

measured
Seafloor depth
68 m
Sea-surface temperature
—
Distance from shore
—

Across the residency · 4 sightings

measured
Seafloor depth
41 m – 68 m
Sea-surface temperature
—
Distance from shore
2.0 km – 5.0 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 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.