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

Dragonfly – Residency

12th sighting in Monterey Bay
Fluke of Dragonfly
Dragonfly Confirmed in the catalog @81845
Sep 23 – Oct 5, 2026 · Monterey Bay

Wings Over the Bay

Flukes up twice this September, cold water, good company, no complaints.

154 m
Deepest dive
5:56
Longest dive
80
Dives
Sightings
5
Days between first and last sighting
12
Deepest dive on record
154 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Sep 23, 2026282 m—132 m
Sep 27, 2026247 m—94 m
Sep 28, 202673 m—55 m
Oct 3, 2026567 m—154 m
Oct 5, 2026375 m—66 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
Sep 23, 2026 — seafloor 282 m (measured), deepest dive 132 m (modelled)Sep 23Sep 27, 2026 — seafloor 247 m (measured), deepest dive 94 m (modelled)Sep 27Sep 28, 2026 — seafloor 73 m (measured), deepest dive 55 m (modelled)Sep 28Oct 3, 2026 — seafloor 567 m (measured), deepest dive 154 m (modelled)Oct 3Oct 5, 2026 — seafloor 375 m (measured), deepest dive 66 m (modelled)Oct 5

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

Dives

154 m
Deepest dive
5:56
Longest dive
80
Dives
31 m
Avg dive depth
5
Sightings
12
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200154 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 3, 2026

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

Across the residency · 5 sightings

measured
Seafloor depth
73 m – 567 m
Sea-surface temperature
—
Distance from shore
4.0 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.