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

Demaryius – Residency

7th sighting in Monterey Bay
Fluke of Demaryius
Demaryius Confirmed in the catalog @91806
Aug 12 – Oct 14, 2023 · Monterey Bay

Monterey Bay · Aug – Oct 2023

180 m
Deepest dive
7:37
Longest dive
68
Dives
Sightings
7
Days between first and last sighting
63
Deepest dive on record
180 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 12, 202378 m—68 m
Aug 13, 2023109 m—83 m
Sep 6, 2023142 m—66 m
Sep 7, 202388 m—79 m
Oct 6, 2023104 m—53 m
Oct 7, 202384 m—76 m
Oct 14, 2023567 m—180 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
Aug 12, 2023 — seafloor 78 m (measured), deepest dive 68 m (modelled)Aug 12Aug 13, 2023 — seafloor 109 m (measured), deepest dive 83 m (modelled)Aug 13Sep 6, 2023 — seafloor 142 m (measured), deepest dive 66 m (modelled)Sep 6Sep 7, 2023 — seafloor 88 m (measured), deepest dive 79 m (modelled)Sep 7Oct 6, 2023 — seafloor 104 m (measured), deepest dive 53 m (modelled)Oct 6Oct 7, 2023 — seafloor 84 m (measured), deepest dive 76 m (modelled)Oct 7Oct 14, 2023 — seafloor 567 m (measured), deepest dive 180 m (modelled)Oct 14

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

Dives

180 m
Deepest dive
7:37
Longest dive
68
Dives
29 m
Avg dive depth
7
Sightings
63
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200180 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 14, 2023

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

Across the residency · 7 sightings

measured
Seafloor depth
78 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 7 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.