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

Gem – Residency

9th sighting in Monterey Bay
Fluke of Gem
Gem Confirmed in the catalog @5640
May 12 – Jul 29, 2021 · Monterey Bay

Monterey Bay · May – Jul 2021

136 m
Deepest dive
6:12
Longest dive
58
Dives
Sightings
5
Days between first and last sighting
78

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 12, 202156 m—24 m
May 28, 2021567 m—136 m
May 29, 202161 m—33 m
May 29, 2021567 m—64 m
Jul 29, 2021100 m—88 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 12, 2021 — seafloor 56 m (measured), deepest dive 24 m (modelled)May 12May 28, 2021 — seafloor 567 m (measured), deepest dive 136 m (modelled)May 28May 29, 2021 — seafloor 61 m (measured), deepest dive 33 m (modelled)May 29May 29, 2021 — seafloor 567 m (measured), deepest dive 64 m (modelled)May 29Jul 29, 2021 — seafloor 100 m (measured), deepest dive 88 m (modelled)Jul 29

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

Dives

136 m
Deepest dive
6:12
Longest dive
58
Dives
23 m
Avg dive depth
5
Sightings
78
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150136 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 · May 28, 2021

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

Across the residency · 5 sightings

measured
Seafloor depth
56 m – 567 m
Sea-surface temperature
—
Distance from shore
3.0 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 5 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.