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

Bread Knife – Residency

98th sighting in Monterey Bay
Fluke of Bread Knife
Bread Knife Confirmed in the catalog @3005
Apr 4 – Oct 27, 2025 · Monterey Bay

Monterey Bay · Apr – Oct 2025

103 m
Deepest dive
3:09
Longest dive
134
Dives
Sightings
11
Days between first and last sighting
206

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Apr 4, 202560 m12.3°C38 m
Apr 16, 2025156 m12.1°C49 m
Jun 8, 2025111 m15.2°C73 m
Jun 8, 2025481 m15.2°C103 m
Jun 16, 202533 m14.9°C23 m
Jul 17, 202551 m15.7°C46 m
Sep 6, 202527 m16.1°C23 m
Oct 25, 202576 m16.0°C56 m
Oct 26, 202583 m15.4°C43 m
Oct 26, 202592 m15.4°C52 m
Oct 27, 2025641 m15.1°C50 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 4, 2025 — seafloor 60 m (measured), deepest dive 38 m (modelled)Apr 4Apr 16, 2025 — seafloor 156 m (measured), deepest dive 49 m (modelled)Apr 16Jun 8, 2025 — seafloor 111 m (measured), deepest dive 73 m (modelled)Jun 8Jun 8, 2025 — seafloor 481 m (measured), deepest dive 103 m (modelled)Jun 8Jun 16, 2025 — seafloor 33 m (measured), deepest dive 23 m (modelled)Jun 16Jul 17, 2025 — seafloor 51 m (measured), deepest dive 46 m (modelled)Jul 17Sep 6, 2025 — seafloor 27 m (measured), deepest dive 23 m (modelled)Sep 6Oct 25, 2025 — seafloor 76 m (measured), deepest dive 56 m (modelled)Oct 25Oct 26, 2025 — seafloor 83 m (measured), deepest dive 43 m (modelled)Oct 26Oct 26, 2025 — seafloor 92 m (measured), deepest dive 52 m (modelled)Oct 26Oct 27, 2025 — seafloor 641 m (measured), deepest dive 50 m (modelled)Oct 27

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

Dives

103 m
Deepest dive
3:09
Longest dive
134
Dives
22 m
Avg dive depth
11
Sightings
206
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150103 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (481 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 · Jun 8, 2025

measured
Seafloor depth
481 m
Sea-surface temperature
15.2°C
Distance from shore
12.0 km

Across the residency · 11 sightings

measured
Seafloor depth
27 m – 641 m
Sea-surface temperature
12.1°C – 16.1°C
Distance from shore
2.0 km – 13.0 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 11 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.