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

Boomerang – Residency

23rd sighting in Monterey Bay
Fluke of Boomerang
Boomerang Confirmed in the catalog @106591
Aug 6 – 30, 2025 · Monterey Bay

Monterey Bay · Aug 2025

383 m
Deepest dive
10:34
Longest dive
61
Dives
Sightings
5
Days between first and last sighting
24
Deepest dive on record
383 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 6, 2025115 m—78 m
Aug 9, 2025567 m—84 m
Aug 11, 2025478 m—383 m
Aug 11, 2025494 m—85 m
Aug 30, 202527 m—25 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 6, 2025 — seafloor 115 m (measured), deepest dive 78 m (modelled)Aug 6Aug 9, 2025 — seafloor 567 m (measured), deepest dive 84 m (modelled)Aug 9Aug 11, 2025 — seafloor 478 m (measured), deepest dive 383 m (modelled)Aug 11Aug 11, 2025 — seafloor 494 m (measured), deepest dive 85 m (modelled)Aug 11Aug 30, 2025 — seafloor 27 m (measured), deepest dive 25 m (modelled)Aug 30

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

Dives

383 m
Deepest dive
10:34
Longest dive
61
Dives
25 m
Avg dive depth
5
Sightings
24
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0200400383 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (478 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 · Aug 11, 2025

measured
Seafloor depth
478 m
Sea-surface temperature
—
Distance from shore
9.0 km

Across the residency · 5 sightings

measured
Seafloor depth
27 m – 567 m
Sea-surface temperature
—
Distance from shore
1.0 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.