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Monterey Bay

Lefty – Residency

121st sighting in Monterey Bay
Fluke of Lefty
Lefty Confirmed in the catalog @934
Aug 7 – Nov 5, 2022 · Monterey Bay

Monterey Mornings

Three months of perfect krill, perfect depths, perfect reasons to stay put.

126 m
Deepest dive
5:35
Longest dive
296
Dives
Sightings
25
Days between first and last sighting
90

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Aug 7, 202263 m16.2°C46 m
Aug 17, 202266 m14.7°C36 m
Aug 18, 202272 m14.5°C56 m
Aug 19, 202250 m14.3°C34 m
Aug 20, 202296 m14.0°C50 m
Sep 4, 202282 m16.1°C75 m
Sep 9, 202272 m16.5°C53 m
Sep 10, 2022707 m16.3°C89 m
Sep 24, 2022150 m16.3°C70 m
Oct 1, 202280 m16.0°C12 m
Oct 7, 2022567 m16.0°C76 m
Oct 11, 202292 m15.1°C60 m
Oct 14, 2022279 m15.1°C109 m
Oct 15, 202276 m14.7°C62 m
Oct 18, 2022138 m14.4°C126 m
Oct 18, 2022490 m14.5°C42 m
Oct 19, 2022149 m14.7°C85 m
Oct 19, 2022293 m14.7°C88 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
Aug 7, 2022 — seafloor 63 m (measured), deepest dive 46 m (modelled)Aug 7Aug 17, 2022 — seafloor 66 m (measured), deepest dive 36 m (modelled)Aug 18, 2022 — seafloor 72 m (measured), deepest dive 56 m (modelled)Aug 19, 2022 — seafloor 50 m (measured), deepest dive 34 m (modelled)Aug 20, 2022 — seafloor 96 m (measured), deepest dive 50 m (modelled)Sep 4, 2022 — seafloor 82 m (measured), deepest dive 75 m (modelled)Sep 4Sep 9, 2022 — seafloor 72 m (measured), deepest dive 53 m (modelled)Sep 10, 2022 — seafloor 707 m (measured), deepest dive 89 m (modelled)Sep 24, 2022 — seafloor 150 m (measured), deepest dive 70 m (modelled)Oct 1, 2022 — seafloor 80 m (measured), deepest dive 12 m (modelled)Oct 7, 2022 — seafloor 567 m (measured), deepest dive 76 m (modelled)Oct 7Oct 11, 2022 — seafloor 92 m (measured), deepest dive 60 m (modelled)Oct 14, 2022 — seafloor 279 m (measured), deepest dive 109 m (modelled)Oct 15, 2022 — seafloor 76 m (measured), deepest dive 62 m (modelled)Oct 18, 2022 — seafloor 138 m (measured), deepest dive 126 m (modelled)Oct 18, 2022 — seafloor 490 m (measured), deepest dive 42 m (modelled)Oct 18Oct 19, 2022 — seafloor 149 m (measured), deepest dive 85 m (modelled)Oct 19, 2022 — seafloor 293 m (measured), deepest dive 88 m (modelled)Oct 19, 2022 — seafloor 282 m (measured), deepest dive 126 m (modelled)Oct 24, 2022 — seafloor 50 m (measured), deepest dive 33 m (modelled)Oct 28, 2022 — seafloor 72 m (measured), deepest dive 38 m (modelled)Oct 28Oct 28, 2022 — seafloor 131 m (measured), deepest dive 36 m (modelled)Oct 29, 2022 — seafloor 567 m (measured), deepest dive 23 m (modelled)Nov 5, 2022 — seafloor 54 m (measured), deepest dive 37 m (modelled)Nov 5, 2022 — seafloor 77 m (measured), deepest dive 52 m (modelled)

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

Dives

126 m
Deepest dive
5:35
Longest dive
296
Dives
24 m
Avg dive depth
25
Sightings
90
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150126 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (138 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 19, 2022

measured
Seafloor depth
282 m
Sea-surface temperature
14.7°C
Distance from shore
7.0 km

Across the residency · 25 sightings

measured
Seafloor depth
50 m – 707 m
Sea-surface temperature
13.1°C – 16.5°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 25 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.