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

HW-MN0503748 – Residency

15th sighting in Monterey Bay
Fluke of HW-MN0503748
HW-MN0503748 Confirmed in the catalog @139249
Jul 18 – Sep 29, 2026 · Monterey Bay

Full Bay, Full Summer

Weeks of green water and someone catching me at the surface almost daily.

340 m
Deepest dive
9:00
Longest dive
137
Dives
Sightings
13
Days between first and last sighting
73
Deepest dive on record
340 m · this residency

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 18, 202667 m15.4°C37 m
Jul 19, 2026254 m15.8°C62 m
Aug 21, 202686 m16.9°C30 m
Aug 21, 2026129 m16.9°C90 m
Aug 21, 2026176 m16.8°C75 m
Aug 22, 2026236 m16.7°C55 m
Aug 24, 202694 m15.8°C59 m
Sep 20, 2026144 m—58 m
Sep 24, 202671 m—64 m
Sep 25, 2026381 m—340 m
Sep 27, 2026201 m—49 m
Sep 28, 2026126 m—78 m
Sep 29, 2026153 m—65 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 18, 2026 — seafloor 67 m (measured), deepest dive 37 m (modelled)Jul 18Jul 19, 2026 — seafloor 254 m (measured), deepest dive 62 m (modelled)Aug 21, 2026 — seafloor 86 m (measured), deepest dive 30 m (modelled)Aug 21, 2026 — seafloor 129 m (measured), deepest dive 90 m (modelled)Aug 21Aug 21, 2026 — seafloor 176 m (measured), deepest dive 75 m (modelled)Aug 22, 2026 — seafloor 236 m (measured), deepest dive 55 m (modelled)Aug 24, 2026 — seafloor 94 m (measured), deepest dive 59 m (modelled)Aug 24Sep 20, 2026 — seafloor 144 m (measured), deepest dive 58 m (modelled)Sep 24, 2026 — seafloor 71 m (measured), deepest dive 64 m (modelled)Sep 25, 2026 — seafloor 381 m (measured), deepest dive 340 m (modelled)Sep 25Sep 27, 2026 — seafloor 201 m (measured), deepest dive 49 m (modelled)Sep 28, 2026 — seafloor 126 m (measured), deepest dive 78 m (modelled)Sep 29, 2026 — seafloor 153 m (measured), deepest dive 65 m (modelled)Sep 29

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

Dives

340 m
Deepest dive
9:00
Longest dive
137
Dives
28 m
Avg dive depth
13
Sightings
73
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0175350340 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (381 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 25, 2026

measured
Seafloor depth
381 m
Sea-surface temperature
—
Distance from shore
8.0 km

Across the residency · 13 sightings

measured
Seafloor depth
67 m – 381 m
Sea-surface temperature
15.4°C – 16.9°C
Distance from shore
2.0 km – 14.0 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 13 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.