Risa
Try Deep freeDeep
Risa
Try Deep freeDeep
Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Lynn Canal & Stephens Passage

Riddler – Residency

133rd sighting in Lynn Canal & Stephens Passage
Fluke of Riddler
Riddler Confirmed in the catalog @18248
May 20 – Oct 6, 2026 · Lynn Canal & Stephens Passage

Long Season on the Shelf

Herring stacked up, cameras clicking, dorsal notch doing all the talking.

128 m
Deepest dive
5:12
Longest dive
1,064
Dives
Sightings
81
Days between first and last sighting
138

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
May 20, 202659 m7.9°C47 m
Jun 8, 202685 m9.4°C65 m
Jun 11, 2026117 m9.7°C40 m
Jun 12, 202681 m9.8°C64 m
Jun 16, 2026106 m9.3°C49 m
Jun 18, 20269 m9.4°C7 m
Jun 19, 2026100 m9.0°C44 m
Jun 23, 2026121 m11.4°C105 m
Jun 24, 2026102 m11.4°C79 m
Jun 25, 2026116 m11.5°C38 m
Jun 26, 2026109 m11.8°C60 m
Jun 28, 2026110 m11.7°C94 m
Jun 29, 202692 m11.7°C47 m
Jun 30, 202686 m11.7°C66 m
Jul 1, 202688 m11.2°C68 m
Jul 3, 2026107 m11.3°C83 m
Jul 4, 2026108 m11.4°C70 m
Jul 5, 202690 m11.7°C41 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 20, 2026 — seafloor 59 m (measured), deepest dive 47 m (modelled)May 20Jun 8, 2026 — seafloor 85 m (measured), deepest dive 65 m (modelled)Jun 11, 2026 — seafloor 117 m (measured), deepest dive 40 m (modelled)Jun 12, 2026 — seafloor 81 m (measured), deepest dive 64 m (modelled)Jun 16, 2026 — seafloor 106 m (measured), deepest dive 49 m (modelled)Jun 18, 2026 — seafloor 9 m (measured), deepest dive 7 m (modelled)Jun 19, 2026 — seafloor 100 m (measured), deepest dive 44 m (modelled)Jun 23, 2026 — seafloor 121 m (measured), deepest dive 105 m (modelled)Jun 24, 2026 — seafloor 102 m (measured), deepest dive 79 m (modelled)Jun 25, 2026 — seafloor 116 m (measured), deepest dive 38 m (modelled)Jun 26, 2026 — seafloor 109 m (measured), deepest dive 60 m (modelled)Jun 28, 2026 — seafloor 110 m (measured), deepest dive 94 m (modelled)Jun 29, 2026 — seafloor 92 m (measured), deepest dive 47 m (modelled)Jun 30, 2026 — seafloor 86 m (measured), deepest dive 66 m (modelled)Jul 1, 2026 — seafloor 88 m (measured), deepest dive 68 m (modelled)Jul 1Jul 3, 2026 — seafloor 107 m (measured), deepest dive 83 m (modelled)Jul 4, 2026 — seafloor 108 m (measured), deepest dive 70 m (modelled)Jul 5, 2026 — seafloor 90 m (measured), deepest dive 41 m (modelled)Jul 7, 2026 — seafloor 241 m (measured), deepest dive 102 m (modelled)Jul 12, 2026 — seafloor 114 m (measured), deepest dive 98 m (modelled)Jul 13, 2026 — seafloor 145 m (measured), deepest dive 60 m (modelled)Jul 14, 2026 — seafloor 121 m (measured), deepest dive 50 m (modelled)Jul 15, 2026 — seafloor 91 m (measured), deepest dive 78 m (modelled)Jul 16, 2026 — seafloor 95 m (measured), deepest dive 70 m (modelled)Jul 17, 2026 — seafloor 71 m (measured), deepest dive 39 m (modelled)Jul 18, 2026 — seafloor 76 m (measured), deepest dive 70 m (modelled)Jul 19, 2026 — seafloor 103 m (measured), deepest dive 66 m (modelled)Jul 20, 2026 — seafloor 147 m (measured), deepest dive 128 m (modelled)Jul 21, 2026 — seafloor 93 m (measured), deepest dive 41 m (modelled)Jul 21Jul 22, 2026 — seafloor 103 m (measured), deepest dive 30 m (modelled)Jul 25, 2026 — seafloor 139 m (measured), deepest dive 99 m (modelled)Jul 29, 2026 — seafloor 62 m (measured), deepest dive 53 m (modelled)Jul 30, 2026 — seafloor 74 m (measured), deepest dive 30 m (modelled)Jul 31, 2026 — seafloor 71 m (measured), deepest dive 60 m (modelled)Aug 1, 2026 — seafloor 64 m (measured), deepest dive 44 m (modelled)Aug 2, 2026 — seafloor 81 m (measured), deepest dive 49 m (modelled)Aug 3, 2026 — seafloor 95 m (measured), deepest dive 28 m (modelled)Aug 4, 2026 — seafloor 55 m (measured), deepest dive 45 m (modelled)Aug 5, 2026 — seafloor 56 m (measured), deepest dive 49 m (modelled)Aug 6, 2026 — seafloor 92 m (measured), deepest dive 42 m (modelled)Aug 7, 2026 — seafloor 94 m (measured), deepest dive 46 m (modelled)Aug 8, 2026 — seafloor 85 m (measured), deepest dive 66 m (modelled)Aug 9, 2026 — seafloor 87 m (measured), deepest dive 49 m (modelled)Aug 9Aug 10, 2026 — seafloor 88 m (measured), deepest dive 59 m (modelled)Aug 11, 2026 — seafloor 67 m (measured), deepest dive 53 m (modelled)Aug 13, 2026 — seafloor 94 m (measured), deepest dive 32 m (modelled)Aug 14, 2026 — seafloor 98 m (measured), deepest dive 70 m (modelled)Aug 16, 2026 — seafloor 131 m (measured), deepest dive 60 m (modelled)Aug 17, 2026 — seafloor 91 m (measured), deepest dive 71 m (modelled)Aug 18, 2026 — seafloor 110 m (measured), deepest dive 58 m (modelled)Aug 19, 2026 — seafloor 92 m (measured), deepest dive 59 m (modelled)Aug 20, 2026 — seafloor 123 m (measured), deepest dive 88 m (modelled)Aug 21, 2026 — seafloor 110 m (measured), deepest dive 55 m (modelled)Aug 23, 2026 — seafloor 72 m (measured), deepest dive 50 m (modelled)Aug 25, 2026 — seafloor 65 m (measured), deepest dive 58 m (modelled)Aug 26, 2026 — seafloor 98 m (measured), deepest dive 79 m (modelled)Aug 27, 2026 — seafloor 85 m (measured), deepest dive 46 m (modelled)Aug 27Aug 28, 2026 — seafloor 100 m (measured), deepest dive 52 m (modelled)Aug 29, 2026 — seafloor 88 m (measured), deepest dive 59 m (modelled)Aug 31, 2026 — seafloor 79 m (measured), deepest dive 72 m (modelled)Sep 1, 2026 — seafloor 96 m (measured), deepest dive 50 m (modelled)Sep 2, 2026 — seafloor 69 m (measured), deepest dive 48 m (modelled)Sep 5, 2026 — seafloor 101 m (measured), deepest dive 86 m (modelled)Sep 9, 2026 — seafloor 90 m (measured), deepest dive 38 m (modelled)Sep 10, 2026 — seafloor 158 m (measured), deepest dive 123 m (modelled)Sep 11, 2026 — seafloor 61 m (measured), deepest dive 32 m (modelled)Sep 13, 2026 — seafloor 22 m (measured), deepest dive 17 m (modelled)Sep 14, 2026 — seafloor 59 m (measured), deepest dive 42 m (modelled)Sep 15, 2026 — seafloor 41 m (measured), deepest dive 33 m (modelled)Sep 16, 2026 — seafloor 87 m (measured), deepest dive 37 m (modelled)Sep 17, 2026 — seafloor 55 m (measured), deepest dive 49 m (modelled)Sep 17Sep 18, 2026 — seafloor 97 m (measured), deepest dive 58 m (modelled)Sep 20, 2026 — seafloor 72 m (measured), deepest dive 57 m (modelled)Sep 21, 2026 — seafloor 111 m (measured), deepest dive 86 m (modelled)Sep 22, 2026 — seafloor 88 m (measured), deepest dive 70 m (modelled)Sep 23, 2026 — seafloor 87 m (measured), deepest dive 54 m (modelled)Sep 25, 2026 — seafloor 93 m (measured), deepest dive 82 m (modelled)Sep 28, 2026 — seafloor 50 m (measured), deepest dive 40 m (modelled)Sep 29, 2026 — seafloor 86 m (measured), deepest dive 48 m (modelled)Oct 6, 2026 — seafloor 79 m (measured), deepest dive 26 m (modelled)Oct 6, 2026 — seafloor 97 m (measured), deepest dive 82 m (modelled)

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

Dives

128 m
Deepest dive
5:12
Longest dive
1,064
Dives
23 m
Avg dive depth
81
Sightings
138
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150128 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (147 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 20, 2026

measured
Seafloor depth
147 m
Sea-surface temperature
13.0°C
Distance from shore
1.0 km

Across the residency · 81 sightings

measured
Seafloor depth
9 m – 241 m
Sea-surface temperature
7.9°C – 15.8°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 81 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.