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

Akiko – Residency

89th sighting in Monterey Bay
Fluke of Akiko
Akiko Confirmed in the catalog @84916
Sep 28 – Dec 20, 2025 · Monterey Bay

Monterey Bay · Sep – Dec 2025

122 m
Deepest dive
4:49
Longest dive
154
Dives
Sightings
11
Days between first and last sighting
83

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Sep 28, 202556 m17.5°C46 m
Sep 30, 2025276 m16.9°C99 m
Oct 20, 202532 m15.8°C29 m
Dec 6, 202595 m14.4°C57 m
Dec 7, 202591 m14.4°C42 m
Dec 10, 2025110 m14.0°C38 m
Dec 13, 2025112 m14.2°C51 m
Dec 13, 2025303 m14.2°C98 m
Dec 18, 202591 m15.1°C48 m
Dec 18, 2025117 m15.1°C105 m
Dec 20, 2025538 m14.5°C122 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 28, 2025 — seafloor 56 m (measured), deepest dive 46 m (modelled)Sep 28Sep 30, 2025 — seafloor 276 m (measured), deepest dive 99 m (modelled)Sep 30Oct 20, 2025 — seafloor 32 m (measured), deepest dive 29 m (modelled)Oct 20Dec 6, 2025 — seafloor 95 m (measured), deepest dive 57 m (modelled)Dec 6Dec 7, 2025 — seafloor 91 m (measured), deepest dive 42 m (modelled)Dec 7Dec 10, 2025 — seafloor 110 m (measured), deepest dive 38 m (modelled)Dec 10Dec 13, 2025 — seafloor 112 m (measured), deepest dive 51 m (modelled)Dec 13Dec 13, 2025 — seafloor 303 m (measured), deepest dive 98 m (modelled)Dec 13Dec 18, 2025 — seafloor 91 m (measured), deepest dive 48 m (modelled)Dec 18Dec 18, 2025 — seafloor 117 m (measured), deepest dive 105 m (modelled)Dec 18Dec 20, 2025 — seafloor 538 m (measured), deepest dive 122 m (modelled)Dec 20

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

Dives

122 m
Deepest dive
4:49
Longest dive
154
Dives
25 m
Avg dive depth
11
Sightings
83
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150122 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (538 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 · Dec 20, 2025

measured
Seafloor depth
538 m
Sea-surface temperature
14.5°C
Distance from shore
10.0 km

Across the residency · 11 sightings

measured
Seafloor depth
32 m – 538 m
Sea-surface temperature
14.0°C – 17.5°C
Distance from shore
3.0 km – 13.0 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 11 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.