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

Roughneck – Residency

36th sighting in Monterey Bay
Fluke of Roughneck
Roughneck Confirmed in the catalog @25
Jul 26 – Oct 12, 2025 · Monterey Bay

Summer in the Bay

Found my favorite feeding spot again and stayed put for a proper season.

83 m
Deepest dive
2:58
Longest dive
32
Dives
Sightings
4
Days between first and last sighting
78

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 26, 2025567 m16.2°C52 m
Aug 14, 2025101 m15.3°C83 m
Oct 12, 2025134 m19.5°C35 m
Oct 12, 202598 m19.4°C57 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
Jul 26, 2025 — seafloor 567 m (measured), deepest dive 52 m (modelled)Jul 26Aug 14, 2025 — seafloor 101 m (measured), deepest dive 83 m (modelled)Aug 14Oct 12, 2025 — seafloor 134 m (measured), deepest dive 35 m (modelled)Oct 12Oct 12, 2025 — seafloor 98 m (measured), deepest dive 57 m (modelled)Oct 12

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

Dives

83 m
Deepest dive
2:58
Longest dive
32
Dives
28 m
Avg dive depth
4
Sightings
78
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010083 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (101 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 14, 2025

measured
Seafloor depth
101 m
Sea-surface temperature
15.3°C
Distance from shore
3.0 km

Across the residency · 4 sightings

measured
Seafloor depth
98 m – 567 m
Sea-surface temperature
15.3°C – 19.5°C
Distance from shore
3.0 km – 17.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

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

Source records

This activity is assembled from 4 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.