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Monterey Bay

2020-2021 calf of Momster – Residency

17th sighting in Monterey Bay
Fluke of 2020-2021 calf of Momster
2020-2021 calf of Momster Confirmed in the catalog @69535
Apr 18 – Oct 12, 2026 · Monterey Bay

Canyon Edge, All Summer

Whole summer logged over the canyon — this water just knows me.

306 m
Deepest dive
12:18
Longest dive
168
Dives
Sightings
14
Days between first and last sighting
177

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 18, 202647 m13.8°C38 m
Jul 12, 202680 m16.2°C63 m
Sep 10, 2026164 m17.7°C106 m
Sep 13, 2026188 m—147 m
Sep 15, 2026144 m16.3°C94 m
Sep 19, 202662 m—32 m
Sep 21, 2026188 m—70 m
Sep 28, 202689 m—80 m
Sep 29, 2026163 m—55 m
Sep 30, 2026203 m—112 m
Oct 3, 2026150 m—113 m
Oct 7, 2026157 m—112 m
Oct 9, 2026567 m—306 m
Oct 12, 2026172 m—49 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 18, 2026 — seafloor 47 m (measured), deepest dive 38 m (modelled)Apr 18Jul 12, 2026 — seafloor 80 m (measured), deepest dive 63 m (modelled)Sep 10, 2026 — seafloor 164 m (measured), deepest dive 106 m (modelled)Sep 13, 2026 — seafloor 188 m (measured), deepest dive 147 m (modelled)Sep 13Sep 15, 2026 — seafloor 144 m (measured), deepest dive 94 m (modelled)Sep 19, 2026 — seafloor 62 m (measured), deepest dive 32 m (modelled)Sep 21, 2026 — seafloor 188 m (measured), deepest dive 70 m (modelled)Sep 21Sep 28, 2026 — seafloor 89 m (measured), deepest dive 80 m (modelled)Sep 29, 2026 — seafloor 163 m (measured), deepest dive 55 m (modelled)Sep 30, 2026 — seafloor 203 m (measured), deepest dive 112 m (modelled)Sep 30Oct 3, 2026 — seafloor 150 m (measured), deepest dive 113 m (modelled)Oct 7, 2026 — seafloor 157 m (measured), deepest dive 112 m (modelled)Oct 9, 2026 — seafloor 567 m (measured), deepest dive 306 m (modelled)Oct 9Oct 12, 2026 — seafloor 172 m (measured), deepest dive 49 m (modelled)

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

Dives

306 m
Deepest dive
12:18
Longest dive
168
Dives
32 m
Avg dive depth
14
Sightings
177
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0175350306 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (567 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 9, 2026

measured
Seafloor depth
567 m
Sea-surface temperature
—
Distance from shore
16.0 km

Across the residency · 14 sightings

measured
Seafloor depth
47 m – 567 m
Sea-surface temperature
13.8°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 14 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.