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Monterey Bay

Lefty – Residency

36th sighting in Monterey Bay
Fluke of Lefty
Lefty Confirmed in the catalog @934
May 18 – Nov 2, 2018 · Monterey Bay

Monterey Bay · May – Nov 2018

153 m
Deepest dive
6:37
Longest dive
270
Dives
Sightings
25
Days between first and last sighting
168

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 18, 2018338 m12.9°C73 m
May 25, 2018115 m13.0°C46 m
May 28, 201855 m13.2°C48 m
May 29, 201826 m12.7°C19 m
Jun 1, 2018104 m13.1°C46 m
Jun 2, 201841 m13.0°C26 m
Jun 3, 201863 m13.0°C46 m
Jun 8, 201890 m12.4°C51 m
Jun 11, 201870 m11.5°C54 m
Jun 13, 201896 m11.9°C60 m
Jun 15, 201870 m12.5°C27 m
Jun 16, 201862 m13.0°C34 m
Jun 17, 201867 m13.0°C52 m
Jul 18, 2018111 m14.6°C88 m
Jul 21, 201875 m16.9°C60 m
Jul 27, 201885 m15.5°C54 m
Jul 28, 201858 m15.1°C24 m
Aug 9, 2018236 m13.0°C153 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 18, 2018 — seafloor 338 m (measured), deepest dive 73 m (modelled)May 18May 25, 2018 — seafloor 115 m (measured), deepest dive 46 m (modelled)May 28, 2018 — seafloor 55 m (measured), deepest dive 48 m (modelled)May 29, 2018 — seafloor 26 m (measured), deepest dive 19 m (modelled)Jun 1, 2018 — seafloor 104 m (measured), deepest dive 46 m (modelled)Jun 2, 2018 — seafloor 41 m (measured), deepest dive 26 m (modelled)Jun 2Jun 3, 2018 — seafloor 63 m (measured), deepest dive 46 m (modelled)Jun 8, 2018 — seafloor 90 m (measured), deepest dive 51 m (modelled)Jun 11, 2018 — seafloor 70 m (measured), deepest dive 54 m (modelled)Jun 13, 2018 — seafloor 96 m (measured), deepest dive 60 m (modelled)Jun 15, 2018 — seafloor 70 m (measured), deepest dive 27 m (modelled)Jun 15Jun 16, 2018 — seafloor 62 m (measured), deepest dive 34 m (modelled)Jun 17, 2018 — seafloor 67 m (measured), deepest dive 52 m (modelled)Jul 18, 2018 — seafloor 111 m (measured), deepest dive 88 m (modelled)Jul 21, 2018 — seafloor 75 m (measured), deepest dive 60 m (modelled)Jul 27, 2018 — seafloor 85 m (measured), deepest dive 54 m (modelled)Jul 27Jul 28, 2018 — seafloor 58 m (measured), deepest dive 24 m (modelled)Aug 9, 2018 — seafloor 236 m (measured), deepest dive 153 m (modelled)Aug 10, 2018 — seafloor 79 m (measured), deepest dive 71 m (modelled)Aug 11, 2018 — seafloor 164 m (measured), deepest dive 46 m (modelled)Aug 16, 2018 — seafloor 122 m (measured), deepest dive 83 m (modelled)Aug 16Aug 31, 2018 — seafloor 95 m (measured), deepest dive 64 m (modelled)Oct 2, 2018 — seafloor 95 m (measured), deepest dive 30 m (modelled)Oct 4, 2018 — seafloor 87 m (measured), deepest dive 21 m (modelled)Nov 2, 2018 — seafloor 229 m (measured), deepest dive 28 m (modelled)

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

Dives

153 m
Deepest dive
6:37
Longest dive
270
Dives
20 m
Avg dive depth
25
Sightings
168
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200153 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (236 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 · Aug 9, 2018

measured
Seafloor depth
236 m
Sea-surface temperature
13.0°C
Distance from shore
5.0 km

Across the residency · 25 sightings

measured
Seafloor depth
26 m – 338 m
Sea-surface temperature
11.5°C – 16.9°C
Distance from shore
2.0 km – 9.0 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.