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

Ratchet – Residency

123rd sighting in Monterey Bay
Fluke of Ratchet
Ratchet Confirmed in the catalog @7272
Jul 17 – Oct 3, 2021 · Monterey Bay

Monterey Bay · Jul – Oct 2021

225 m
Deepest dive
7:29
Longest dive
271
Dives
Sightings
18
Days between first and last sighting
79

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 17, 202182 m14.1°C71 m
Aug 27, 2021100 m16.5°C25 m
Aug 28, 2021405 m16.7°C92 m
Aug 31, 2021290 m17.4°C225 m
Sep 1, 2021385 m17.4°C189 m
Sep 2, 2021299 m16.9°C48 m
Sep 2, 2021139 m16.9°C86 m
Sep 6, 2021151 m17.0°C97 m
Sep 7, 2021146 m18.1°C95 m
Sep 11, 2021155 m17.5°C134 m
Sep 20, 2021128 m16.1°C34 m
Sep 24, 202194 m16.3°C71 m
Sep 25, 2021107 m16.3°C95 m
Sep 26, 202148 m16.3°C38 m
Sep 26, 202155 m16.2°C43 m
Sep 26, 202150 m16.3°C41 m
Oct 3, 2021255 m15.9°C38 m
Oct 3, 2021327 m15.9°C72 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 17, 2021 — seafloor 82 m (measured), deepest dive 71 m (modelled)Jul 17Aug 27, 2021 — seafloor 100 m (measured), deepest dive 25 m (modelled)Aug 28, 2021 — seafloor 405 m (measured), deepest dive 92 m (modelled)Aug 31, 2021 — seafloor 290 m (measured), deepest dive 225 m (modelled)Aug 31Sep 1, 2021 — seafloor 385 m (measured), deepest dive 189 m (modelled)Sep 2, 2021 — seafloor 299 m (measured), deepest dive 48 m (modelled)Sep 2, 2021 — seafloor 139 m (measured), deepest dive 86 m (modelled)Sep 2Sep 6, 2021 — seafloor 151 m (measured), deepest dive 97 m (modelled)Sep 7, 2021 — seafloor 146 m (measured), deepest dive 95 m (modelled)Sep 11, 2021 — seafloor 155 m (measured), deepest dive 134 m (modelled)Sep 11Sep 20, 2021 — seafloor 128 m (measured), deepest dive 34 m (modelled)Sep 24, 2021 — seafloor 94 m (measured), deepest dive 71 m (modelled)Sep 25, 2021 — seafloor 107 m (measured), deepest dive 95 m (modelled)Sep 25Sep 26, 2021 — seafloor 48 m (measured), deepest dive 38 m (modelled)Sep 26, 2021 — seafloor 55 m (measured), deepest dive 43 m (modelled)Sep 26, 2021 — seafloor 50 m (measured), deepest dive 41 m (modelled)Sep 26Oct 3, 2021 — seafloor 255 m (measured), deepest dive 38 m (modelled)Oct 3, 2021 — seafloor 327 m (measured), deepest dive 72 m (modelled)

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

Dives

225 m
Deepest dive
7:29
Longest dive
271
Dives
29 m
Avg dive depth
18
Sightings
79
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0125250225 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (290 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 · Aug 31, 2021

measured
Seafloor depth
290 m
Sea-surface temperature
17.4°C
Distance from shore
14.0 km

Across the residency · 18 sightings

measured
Seafloor depth
48 m – 405 m
Sea-surface temperature
14.1°C – 18.1°C
Distance from shore
2.0 km – 15.0 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 18 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.