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

Roxbury – Residency

24th sighting in Monterey Bay
Fluke of Roxbury
Roxbury Confirmed in the catalog @139240
Sep 1 – 29, 2026 · Monterey Bay

This Bay, My Bay

September's crowded, deep water, my mother's old feeding line — perfect.

109 m
Deepest dive
2:49
Longest dive
122
Dives
Sightings
11
Days between first and last sighting
28

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Sep 1, 2026254 m15.2°C69 m
Sep 3, 202680 m15.3°C52 m
Sep 6, 2026567 m15.5°C59 m
Sep 7, 2026221 m15.9°C41 m
Sep 10, 2026386 m17.7°C60 m
Sep 14, 2026178 m—59 m
Sep 22, 2026193 m—44 m
Sep 25, 2026254 m—52 m
Sep 26, 202673 m—49 m
Sep 28, 202671 m—34 m
Sep 29, 2026140 m—109 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
Sep 1, 2026 — seafloor 254 m (measured), deepest dive 69 m (modelled)Sep 1Sep 3, 2026 — seafloor 80 m (measured), deepest dive 52 m (modelled)Sep 3Sep 6, 2026 — seafloor 567 m (measured), deepest dive 59 m (modelled)Sep 6Sep 7, 2026 — seafloor 221 m (measured), deepest dive 41 m (modelled)Sep 7Sep 10, 2026 — seafloor 386 m (measured), deepest dive 60 m (modelled)Sep 10Sep 14, 2026 — seafloor 178 m (measured), deepest dive 59 m (modelled)Sep 14Sep 22, 2026 — seafloor 193 m (measured), deepest dive 44 m (modelled)Sep 22Sep 25, 2026 — seafloor 254 m (measured), deepest dive 52 m (modelled)Sep 25Sep 26, 2026 — seafloor 73 m (measured), deepest dive 49 m (modelled)Sep 26Sep 28, 2026 — seafloor 71 m (measured), deepest dive 34 m (modelled)Sep 28Sep 29, 2026 — seafloor 140 m (measured), deepest dive 109 m (modelled)Sep 29

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

Dives

109 m
Deepest dive
2:49
Longest dive
122
Dives
22 m
Avg dive depth
11
Sightings
28
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150109 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (140 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 · Sep 29, 2026

measured
Seafloor depth
140 m
Sea-surface temperature
—
Distance from shore
2.0 km

Across the residency · 11 sightings

measured
Seafloor depth
71 m – 567 m
Sea-surface temperature
15.2°C – 17.7°C
Distance from shore
2.0 km – 16.0 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 11 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.