Risa
Try Deep freeDeep
Risa
Try Deep freeDeep
Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Monterey Bay

Slice – Residency

98th sighting in Monterey Bay
Fluke of Slice
Slice Confirmed in the catalog @23
Sep 2 – Oct 18, 2026 · Monterey Bay

Monterey, Again

Same bay, same fin scar, still circling home.

155 m
Deepest dive
5:50
Longest dive
173
Dives
Sightings
12
Days between first and last sighting
46
Deepest dive on record
155 m · this residency

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Sep 2, 202674 m15.3°C30 m
Sep 4, 2026312 m15.7°C38 m
Sep 5, 2026567 m15.6°C120 m
Sep 7, 202692 m15.6°C78 m
Sep 14, 2026307 m16.3°C150 m
Sep 18, 2026175 m15.7°C39 m
Sep 21, 2026188 m16.7°C155 m
Sep 22, 2026259 m16.7°C137 m
Sep 24, 2026217 m16.8°C95 m
Sep 25, 2026423 m16.5°C87 m
Sep 26, 2026152 m16.6°C31 m
Oct 18, 20261,858 m18.6°C149 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 2, 2026 — seafloor 74 m (measured), deepest dive 30 m (modelled)Sep 2Sep 4, 2026 — seafloor 312 m (measured), deepest dive 38 m (modelled)Sep 4Sep 5, 2026 — seafloor 567 m (measured), deepest dive 120 m (modelled)Sep 5Sep 7, 2026 — seafloor 92 m (measured), deepest dive 78 m (modelled)Sep 7Sep 14, 2026 — seafloor 307 m (measured), deepest dive 150 m (modelled)Sep 14Sep 18, 2026 — seafloor 175 m (measured), deepest dive 39 m (modelled)Sep 18Sep 21, 2026 — seafloor 188 m (measured), deepest dive 155 m (modelled)Sep 21Sep 22, 2026 — seafloor 259 m (measured), deepest dive 137 m (modelled)Sep 22Sep 24, 2026 — seafloor 217 m (measured), deepest dive 95 m (modelled)Sep 24Sep 25, 2026 — seafloor 423 m (measured), deepest dive 87 m (modelled)Sep 25Sep 26, 2026 — seafloor 152 m (measured), deepest dive 31 m (modelled)Sep 26Oct 18, 2026 — seafloor 1,858 m (measured), deepest dive 149 m (modelled)Oct 18

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

Dives

155 m
Deepest dive
5:50
Longest dive
173
Dives
28 m
Avg dive depth
12
Sightings
46
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200155 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (188 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.

Unlock with Risa Deep

Place

Where this happened · Sep 21, 2026

measured
Seafloor depth
188 m
Sea-surface temperature
16.7°C
Distance from shore
6.0 km

Across the residency · 12 sightings

measured
Seafloor depth
74 m – 1,858 m
Sea-surface temperature
15.3°C – 18.6°C
Distance from shore
3.0 km – 16.0 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 12 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).

Happywhale runs on donations: support Happywhale →

Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.