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Monterey Bay

Ocellus – Residency

21st sighting in Monterey Bay
Fluke of Ocellus
Ocellus Confirmed in the catalog @119156
May 25 – Dec 30, 2025 · Monterey Bay

Monterey Bay · May – Dec 2025

150 m
Deepest dive
5:02
Longest dive
258
Dives
Sightings
17
Days between first and last sighting
219

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 25, 202567 m12.8°C54 m
Jul 4, 202578 m13.4°C32 m
Jul 26, 202536 m16.2°C32 m
Jul 27, 202541 m16.0°C32 m
Sep 12, 202583 m16.8°C58 m
Sep 14, 202586 m16.8°C14 m
Sep 27, 202556 m17.7°C50 m
Oct 17, 202581 m15.4°C37 m
Oct 20, 202533 m16.0°C29 m
Oct 21, 202560 m15.9°C46 m
Oct 23, 202573 m15.7°C59 m
Oct 25, 2025164 m15.8°C66 m
Nov 3, 2025164 m15.3°C150 m
Nov 18, 202586 m14.1°C73 m
Dec 6, 202595 m14.4°C70 m
Dec 27, 2025186 m14.1°C87 m
Dec 30, 202585 m14.8°C75 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
May 25, 2025 — seafloor 67 m (measured), deepest dive 54 m (modelled)May 25Jul 4, 2025 — seafloor 78 m (measured), deepest dive 32 m (modelled)Jul 26, 2025 — seafloor 36 m (measured), deepest dive 32 m (modelled)Jul 27, 2025 — seafloor 41 m (measured), deepest dive 32 m (modelled)Jul 27Sep 12, 2025 — seafloor 83 m (measured), deepest dive 58 m (modelled)Sep 14, 2025 — seafloor 86 m (measured), deepest dive 14 m (modelled)Sep 27, 2025 — seafloor 56 m (measured), deepest dive 50 m (modelled)Sep 27Oct 17, 2025 — seafloor 81 m (measured), deepest dive 37 m (modelled)Oct 20, 2025 — seafloor 33 m (measured), deepest dive 29 m (modelled)Oct 21, 2025 — seafloor 60 m (measured), deepest dive 46 m (modelled)Oct 21Oct 23, 2025 — seafloor 73 m (measured), deepest dive 59 m (modelled)Oct 25, 2025 — seafloor 164 m (measured), deepest dive 66 m (modelled)Nov 3, 2025 — seafloor 164 m (measured), deepest dive 150 m (modelled)Nov 3Nov 18, 2025 — seafloor 86 m (measured), deepest dive 73 m (modelled)Dec 6, 2025 — seafloor 95 m (measured), deepest dive 70 m (modelled)Dec 27, 2025 — seafloor 186 m (measured), deepest dive 87 m (modelled)Dec 27Dec 30, 2025 — seafloor 85 m (measured), deepest dive 75 m (modelled)

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

Dives

150 m
Deepest dive
5:02
Longest dive
258
Dives
23 m
Avg dive depth
17
Sightings
219
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200150 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (164 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 · Nov 3, 2025

measured
Seafloor depth
164 m
Sea-surface temperature
15.3°C
Distance from shore
8.0 km

Across the residency · 17 sightings

measured
Seafloor depth
33 m – 186 m
Sea-surface temperature
12.8°C – 17.7°C
Distance from shore
2.0 km – 14.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

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

Source records

This activity is assembled from 17 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.