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

Harry Potter – Residency

9th sighting in Monterey Bay
Fluke of Harry Potter
Harry Potter Confirmed in the catalog @5109
Apr 17 – May 4, 2018 · Monterey Bay

Monterey Bay · Apr – May 2018

91 m
Deepest dive
4:12
Longest dive
74
Dives
Sightings
5
Days between first and last sighting
17

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 17, 201873 m—25 m
Apr 23, 201888 m—74 m
Apr 24, 201861 m—52 m
May 3, 2018100 m—91 m
May 4, 201866 m—57 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
Apr 17, 2018 — seafloor 73 m (measured), deepest dive 25 m (modelled)Apr 17Apr 23, 2018 — seafloor 88 m (measured), deepest dive 74 m (modelled)Apr 23Apr 24, 2018 — seafloor 61 m (measured), deepest dive 52 m (modelled)Apr 24May 3, 2018 — seafloor 100 m (measured), deepest dive 91 m (modelled)May 3May 4, 2018 — seafloor 66 m (measured), deepest dive 57 m (modelled)May 4

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

Dives

91 m
Deepest dive
4:12
Longest dive
74
Dives
22 m
Avg dive depth
5
Sightings
17
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010091 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (100 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 3, 2018

measured
Seafloor depth
100 m
Sea-surface temperature
—
Distance from shore
4.0 km

Across the residency · 5 sightings

measured
Seafloor depth
61 m – 100 m
Sea-surface temperature
—
Distance from shore
2.0 km – 6.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

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

Source records

This activity is assembled from 5 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.