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Monterey Bay

Ratchet – Residency

150th sighting in Monterey Bay
Fluke of Ratchet
Ratchet Confirmed in the catalog @7272
May 9 – Oct 27, 2023 · Monterey Bay

Monterey Bay · May – Oct 2023

163 m
Deepest dive
6:03
Longest dive
208
Dives
Sightings
20
Days between first and last sighting
171

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 9, 2023254 m13.0°C23 m
May 10, 202397 m13.2°C65 m
May 14, 202372 m13.5°C45 m
Jul 1, 202389 m15.0°C63 m
Jul 3, 2023102 m14.4°C28 m
Jul 3, 202333 m15.4°C27 m
Jul 3, 202349 m14.6°C42 m
Jul 6, 202341 m15.2°C38 m
Jul 6, 2023116 m14.9°C30 m
Jul 9, 202381 m14.5°C31 m
Jul 14, 2023108 m13.8°C79 m
Jul 15, 202394 m14.3°C46 m
Jul 20, 202358 m16.1°C27 m
Jul 20, 202364 m16.1°C30 m
Aug 19, 2023385 m17.4°C133 m
Aug 23, 202396 m17.4°C55 m
Aug 25, 202380 m17.8°C51 m
Oct 13, 202353 m15.4°C29 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
May 9, 2023 — seafloor 254 m (measured), deepest dive 23 m (modelled)May 9May 10, 2023 — seafloor 97 m (measured), deepest dive 65 m (modelled)May 14, 2023 — seafloor 72 m (measured), deepest dive 45 m (modelled)Jul 1, 2023 — seafloor 89 m (measured), deepest dive 63 m (modelled)Jul 3, 2023 — seafloor 102 m (measured), deepest dive 28 m (modelled)Jul 3Jul 3, 2023 — seafloor 33 m (measured), deepest dive 27 m (modelled)Jul 3, 2023 — seafloor 49 m (measured), deepest dive 42 m (modelled)Jul 6, 2023 — seafloor 41 m (measured), deepest dive 38 m (modelled)Jul 6, 2023 — seafloor 116 m (measured), deepest dive 30 m (modelled)Jul 6Jul 9, 2023 — seafloor 81 m (measured), deepest dive 31 m (modelled)Jul 14, 2023 — seafloor 108 m (measured), deepest dive 79 m (modelled)Jul 15, 2023 — seafloor 94 m (measured), deepest dive 46 m (modelled)Jul 20, 2023 — seafloor 58 m (measured), deepest dive 27 m (modelled)Jul 20Jul 20, 2023 — seafloor 64 m (measured), deepest dive 30 m (modelled)Aug 19, 2023 — seafloor 385 m (measured), deepest dive 133 m (modelled)Aug 23, 2023 — seafloor 96 m (measured), deepest dive 55 m (modelled)Aug 25, 2023 — seafloor 80 m (measured), deepest dive 51 m (modelled)Aug 25Oct 13, 2023 — seafloor 53 m (measured), deepest dive 29 m (modelled)Oct 26, 2023 — seafloor 92 m (measured), deepest dive 79 m (modelled)Oct 27, 2023 — seafloor 320 m (measured), deepest dive 163 m (modelled)

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

Dives

163 m
Deepest dive
6:03
Longest dive
208
Dives
22 m
Avg dive depth
20
Sightings
171
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200163 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (320 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 · Oct 27, 2023

measured
Seafloor depth
320 m
Sea-surface temperature
14.6°C
Distance from shore
8.0 km

Across the residency · 20 sightings

measured
Seafloor depth
33 m – 385 m
Sea-surface temperature
13.0°C – 17.8°C
Distance from shore
2.0 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 20 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.