Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Monterey Bay

Lefty – Residency

53rd sighting in Monterey Bay
Fluke of Lefty
Lefty Confirmed in the catalog @934
Oct 2 – 31, 2019 · Monterey Bay

Monterey Bay · Oct 2019

111 m
Deepest dive
4:21
Longest dive
45
Dives
Sightings
6
Days between first and last sighting
29

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Oct 2, 201966 m15.7°C44 m
Oct 3, 201968 m15.5°C53 m
Oct 4, 201983 m15.2°C54 m
Oct 7, 2019396 m14.8°C64 m
Oct 21, 201995 m14.0°C84 m
Oct 31, 2019185 m12.8°C111 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
Oct 2, 2019 — seafloor 66 m (measured), deepest dive 44 m (modelled)Oct 2Oct 3, 2019 — seafloor 68 m (measured), deepest dive 53 m (modelled)Oct 3Oct 4, 2019 — seafloor 83 m (measured), deepest dive 54 m (modelled)Oct 4Oct 7, 2019 — seafloor 396 m (measured), deepest dive 64 m (modelled)Oct 7Oct 21, 2019 — seafloor 95 m (measured), deepest dive 84 m (modelled)Oct 21Oct 31, 2019 — seafloor 185 m (measured), deepest dive 111 m (modelled)Oct 31

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

Dives

111 m
Deepest dive
4:21
Longest dive
45
Dives
31 m
Avg dive depth
6
Sightings
29
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150111 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (185 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 31, 2019

measured
Seafloor depth
185 m
Sea-surface temperature
12.8°C
Distance from shore
6.0 km

Across the residency · 6 sightings

measured
Seafloor depth
66 m – 396 m
Sea-surface temperature
12.8°C – 15.7°C
Distance from shore
5.0 km – 10.0 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 6 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.