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

Makamakaula – Residency

7th sighting in Chatham Strait
Fluke of Makamakaula
Makamakaula Confirmed in the catalog @6346
Jun 18 – Jul 8, 2026 · Chatham Strait

Chatham Strait, Early Summer Herring Run

Deep green water, thick herring, and this strait still knows my name.

65 m
Deepest dive
2:12
Longest dive
23
Dives
Sightings
2
Days between first and last sighting
20

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 18, 2026282 m10.1°C65 m
Jul 8, 2026138 m12.3°C39 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
Jun 18, 2026 — seafloor 282 m (measured), deepest dive 65 m (modelled)Jun 18Jul 8, 2026 — seafloor 138 m (measured), deepest dive 39 m (modelled)Jul 8

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

Dives

65 m
Deepest dive
2:12
Longest dive
23
Dives
23 m
Avg dive depth
2
Sightings
20
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010065 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (282 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 · Jun 18, 2026

measured
Seafloor depth
282 m
Sea-surface temperature
10.1°C
Distance from shore
6.0 km

Across the residency · 2 sightings

measured
Seafloor depth
138 m – 282 m
Sea-surface temperature
10.1°C – 12.3°C
Distance from shore
1.0 km – 6.0 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 2 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.