Risa
Try Deep freeDeep
Risa
Try Deep freeDeep
Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Monterey Bay

Bread Knife – Residency

87th sighting in Monterey Bay
Fluke of Bread Knife
Bread Knife Confirmed in the catalog @3005
Apr 7 – Oct 17, 2023 · Monterey Bay

Monterey Bay · Apr – Oct 2023

164 m
Deepest dive
4:21
Longest dive
185
Dives
Sightings
16
Days between first and last sighting
193

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Apr 7, 202387 m11.3°C21 m
Apr 8, 202394 m11.4°C66 m
May 10, 202381 m12.5°C31 m
May 12, 202323 m12.9°C21 m
Jul 5, 202395 m15.1°C70 m
Jul 18, 202381 m15.6°C67 m
Jul 24, 2023111 m15.2°C62 m
Jul 30, 202364 m14.8°C40 m
Aug 8, 202376 m14.0°C41 m
Oct 1, 202336 m16.3°C30 m
Oct 2, 202384 m15.7°C65 m
Oct 3, 202387 m15.7°C71 m
Oct 4, 2023290 m17.1°C164 m
Oct 14, 202370 m15.9°C54 m
Oct 16, 202325 m16.3°C23 m
Oct 17, 2023121 m16.1°C56 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 7, 2023 — seafloor 87 m (measured), deepest dive 21 m (modelled)Apr 7Apr 8, 2023 — seafloor 94 m (measured), deepest dive 66 m (modelled)May 10, 2023 — seafloor 81 m (measured), deepest dive 31 m (modelled)May 12, 2023 — seafloor 23 m (measured), deepest dive 21 m (modelled)May 12Jul 5, 2023 — seafloor 95 m (measured), deepest dive 70 m (modelled)Jul 18, 2023 — seafloor 81 m (measured), deepest dive 67 m (modelled)Jul 24, 2023 — seafloor 111 m (measured), deepest dive 62 m (modelled)Jul 24Jul 30, 2023 — seafloor 64 m (measured), deepest dive 40 m (modelled)Aug 8, 2023 — seafloor 76 m (measured), deepest dive 41 m (modelled)Oct 1, 2023 — seafloor 36 m (measured), deepest dive 30 m (modelled)Oct 1Oct 2, 2023 — seafloor 84 m (measured), deepest dive 65 m (modelled)Oct 3, 2023 — seafloor 87 m (measured), deepest dive 71 m (modelled)Oct 4, 2023 — seafloor 290 m (measured), deepest dive 164 m (modelled)Oct 4Oct 14, 2023 — seafloor 70 m (measured), deepest dive 54 m (modelled)Oct 16, 2023 — seafloor 25 m (measured), deepest dive 23 m (modelled)Oct 17, 2023 — seafloor 121 m (measured), deepest dive 56 m (modelled)Oct 17

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

Dives

164 m
Deepest dive
4:21
Longest dive
185
Dives
21 m
Avg dive depth
16
Sightings
193
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200164 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (290 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 · Oct 4, 2023

measured
Seafloor depth
290 m
Sea-surface temperature
17.1°C
Distance from shore
7.0 km

Across the residency · 16 sightings

measured
Seafloor depth
23 m – 290 m
Sea-surface temperature
11.3°C – 17.1°C
Distance from shore
2.0 km – 15.0 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 16 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.