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Monterey Bay

HW-MN0503943 – Residency

12th sighting in Monterey Bay
Fluke of HW-MN0503943
HW-MN0503943 Confirmed in the catalog @147550
Jun 25 – Oct 18, 2026 · Monterey Bay

Shelf Edge Regular

Late summer, cool green water, plenty of company — that's my kind of stretch.

155 m
Deepest dive
4:41
Longest dive
112
Dives
Sightings
12
Days between first and last sighting
115
Deepest dive on record
155 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 25, 202677 m16.7°C40 m
Aug 12, 2026300 m16.9°C64 m
Sep 15, 2026139 m—64 m
Sep 17, 2026113 m15.6°C97 m
Sep 21, 2026188 m—55 m
Sep 21, 2026247 m—129 m
Sep 25, 2026254 m—72 m
Sep 28, 2026112 m—39 m
Sep 29, 2026153 m—18 m
Sep 30, 2026147 m—71 m
Oct 9, 2026254 m—125 m
Oct 18, 2026254 m—155 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 25, 2026 — seafloor 77 m (measured), deepest dive 40 m (modelled)Jun 25Aug 12, 2026 — seafloor 300 m (measured), deepest dive 64 m (modelled)Aug 12Sep 15, 2026 — seafloor 139 m (measured), deepest dive 64 m (modelled)Sep 15Sep 17, 2026 — seafloor 113 m (measured), deepest dive 97 m (modelled)Sep 17Sep 21, 2026 — seafloor 188 m (measured), deepest dive 55 m (modelled)Sep 21Sep 21, 2026 — seafloor 247 m (measured), deepest dive 129 m (modelled)Sep 21Sep 25, 2026 — seafloor 254 m (measured), deepest dive 72 m (modelled)Sep 25Sep 28, 2026 — seafloor 112 m (measured), deepest dive 39 m (modelled)Sep 28Sep 29, 2026 — seafloor 153 m (measured), deepest dive 18 m (modelled)Sep 29Sep 30, 2026 — seafloor 147 m (measured), deepest dive 71 m (modelled)Sep 30Oct 9, 2026 — seafloor 254 m (measured), deepest dive 125 m (modelled)Oct 9Oct 18, 2026 — seafloor 254 m (measured), deepest dive 155 m (modelled)Oct 18

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

Dives

155 m
Deepest dive
4:41
Longest dive
112
Dives
26 m
Avg dive depth
12
Sightings
115
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200155 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (254 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 · Oct 18, 2026

measured
Seafloor depth
254 m
Sea-surface temperature
—
Distance from shore
4.0 km

Across the residency · 12 sightings

measured
Seafloor depth
77 m – 300 m
Sea-surface temperature
15.6°C – 16.9°C
Distance from shore
2.0 km – 11.0 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 12 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.