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

Ditch Mermaid – Residency

7th sighting in Prince William Sound
Fluke of Ditch Mermaid
Ditch Mermaid Confirmed in the catalog @15467
Jul 10 – Aug 13, 2023 · Prince William Sound

Prince William Sound · Jul – Aug 2023

87 m
Deepest dive
3:17
Longest dive
46
Dives
Sightings
5
Days between first and last sighting
33

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 10, 2023121 m—41 m
Jul 14, 2023284 m—71 m
Jul 17, 2023201 m—87 m
Aug 2, 20234 m—4 m
Aug 13, 2023262 m—31 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
Jul 10, 2023 — seafloor 121 m (measured), deepest dive 41 m (modelled)Jul 10Jul 14, 2023 — seafloor 284 m (measured), deepest dive 71 m (modelled)Jul 14Jul 17, 2023 — seafloor 201 m (measured), deepest dive 87 m (modelled)Jul 17Aug 2, 2023 — seafloor 4 m (measured), deepest dive 4 m (modelled)Aug 2Aug 13, 2023 — seafloor 262 m (measured), deepest dive 31 m (modelled)Aug 13

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

Dives

87 m
Deepest dive
3:17
Longest dive
46
Dives
23 m
Avg dive depth
5
Sightings
33
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010087 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (201 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.

Unlock with Risa Deep

Place

Where this happened · Jul 17, 2023

measured
Seafloor depth
201 m
Sea-surface temperature
—
Distance from shore
1.0 km

Across the residency · 5 sightings

measured
Seafloor depth
4 m – 284 m
Sea-surface temperature
—
Distance from shore
1.0 km – 3.0 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).

Happywhale runs on donations: support Happywhale →

Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.