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Monterey Bay

Lefty – Residency

96th sighting in Monterey Bay
Fluke of Lefty
Lefty Confirmed in the catalog @934
May 15 – Nov 24, 2021 · Monterey Bay

Monterey Bay Summer

Six months in my favorite spot, surfacing again and again where the water feels just right.

193 m
Deepest dive
8:21
Longest dive
374
Dives
Sightings
30
Days between first and last sighting
193

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 15, 2021355 m12.1°C193 m
May 16, 202152 m12.1°C40 m
May 22, 202133 m12.5°C29 m
May 22, 202157 m11.9°C11 m
May 22, 202156 m12.0°C50 m
May 23, 202158 m12.3°C33 m
May 23, 202154 m12.3°C49 m
May 24, 202148 m12.6°C39 m
May 25, 202160 m12.3°C36 m
May 25, 202154 m12.4°C47 m
May 28, 2021567 m12.5°C100 m
May 31, 202149 m13.2°C41 m
Jun 1, 202158 m13.1°C52 m
Jun 1, 202144 m13.3°C27 m
Jul 10, 2021567 m15.5°C29 m
Jul 14, 202172 m14.6°C21 m
Aug 12, 2021100 m16.3°C66 m
Aug 13, 202175 m16.3°C55 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 15, 2021 — seafloor 355 m (measured), deepest dive 193 m (modelled)May 15May 16, 2021 — seafloor 52 m (measured), deepest dive 40 m (modelled)May 22, 2021 — seafloor 33 m (measured), deepest dive 29 m (modelled)May 22, 2021 — seafloor 57 m (measured), deepest dive 11 m (modelled)May 22, 2021 — seafloor 56 m (measured), deepest dive 50 m (modelled)May 23, 2021 — seafloor 58 m (measured), deepest dive 33 m (modelled)May 23May 23, 2021 — seafloor 54 m (measured), deepest dive 49 m (modelled)May 24, 2021 — seafloor 48 m (measured), deepest dive 39 m (modelled)May 25, 2021 — seafloor 60 m (measured), deepest dive 36 m (modelled)May 25, 2021 — seafloor 54 m (measured), deepest dive 47 m (modelled)May 28, 2021 — seafloor 567 m (measured), deepest dive 100 m (modelled)May 28May 31, 2021 — seafloor 49 m (measured), deepest dive 41 m (modelled)Jun 1, 2021 — seafloor 58 m (measured), deepest dive 52 m (modelled)Jun 1, 2021 — seafloor 44 m (measured), deepest dive 27 m (modelled)Jul 10, 2021 — seafloor 567 m (measured), deepest dive 29 m (modelled)Jul 14, 2021 — seafloor 72 m (measured), deepest dive 21 m (modelled)Jul 14Aug 12, 2021 — seafloor 100 m (measured), deepest dive 66 m (modelled)Aug 13, 2021 — seafloor 75 m (measured), deepest dive 55 m (modelled)Aug 14, 2021 — seafloor 86 m (measured), deepest dive 26 m (modelled)Aug 15, 2021 — seafloor 45 m (measured), deepest dive 39 m (modelled)Aug 16, 2021 — seafloor 195 m (measured), deepest dive 120 m (modelled)Aug 16Aug 16, 2021 — seafloor 166 m (measured), deepest dive 139 m (modelled)Aug 16, 2021 — seafloor 61 m (measured), deepest dive 52 m (modelled)Aug 20, 2021 — seafloor 90 m (measured), deepest dive 78 m (modelled)Aug 24, 2021 — seafloor 66 m (measured), deepest dive 60 m (modelled)Oct 3, 2021 — seafloor 285 m (measured), deepest dive 51 m (modelled)Oct 3Oct 7, 2021 — seafloor 233 m (measured), deepest dive 150 m (modelled)Nov 22, 2021 — seafloor 207 m (measured), deepest dive 40 m (modelled)Nov 23, 2021 — seafloor 157 m (measured), deepest dive 36 m (modelled)Nov 24, 2021 — seafloor 567 m (measured), deepest dive 14 m (modelled)

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

Dives

193 m
Deepest dive
8:21
Longest dive
374
Dives
22 m
Avg dive depth
30
Sightings
193
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200193 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (355 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 · May 15, 2021

measured
Seafloor depth
355 m
Sea-surface temperature
12.1°C
Distance from shore
6.0 km

Across the residency · 30 sightings

measured
Seafloor depth
33 m – 567 m
Sea-surface temperature
11.9°C – 16.3°C
Distance from shore
1.0 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 30 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.