Coral Reef Diagnostics

Raja Ampat - Dampier Strait night muck dive

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05
Photo: Anderson Mayfield/Coral Reef Diagnostics
Country
Survey date(s)
2018-10-22
Coordinates
-0.5400, 130.6900
Approximate position.
Coral cover
not reported
Night dive.
Observations
debris
Heat stress
Most recent heat load record
26 Oct 2026 · Bleaching Watch
5-year thermal stress load
5-year mean max. degree heating weeks (DHW)
2021–2025
NOAA Coral Reef Watch — West Papua virtual station
i 5-year mean max. DHW is the mean of the annual maximum DHWs over the five complete years named above, not conditions today.
More infoWest Papua (NOAA CRW virtual station)
Photographs
11
Site summary
Read this summary in:

A night muck dive over sand with pockets of trash on the seabed, where small cuttlefish, squid, and frogfish were seen. No coral-cover figure applies to this muck habitat.

Max. depth dived
19.6 m
Water temp. during survey
28.0°Cii
-1.4°C vs the 2018 mean sea temperature (29.4°C)
ii Water temperature in Anderson's DiverLog record of this dive (22 October 2018, 18:45); a single manually entered value, the dive has no computer profile, so no average exists.
Bottom time
67 min
in at 18:45

Four independent survey stations shown with the program’s logo — click one to see how far it is from this site.

One other CRD dive site within 5 km is shown in orange; it has no page of its own.

5 of the 30 photographs on this page are shown beside the text that discusses them under "Site description" below.

6Photo: Pierre7Photo: Pierre8Photo: Pierre9Photo: Pierre10Photo: Pierre11Photo: Pierre12Photo: Pierre13Photo: Pierre14Photo: Pierre15Photo: Pierre16Photo: Pierre17Photo: Pierre18Photo: Pierre19Photo: Pierre20Photo: Pierre21Photo: Pierre22Photo: Pierre23Photo: Pierre24Photo: Pierre25Photo: Pierre26Photo: Pierre27Photo: Pierre28Photo: Pierre29Photo: Pierre30Photo: Pierre

Photo credit & attribution

Site description

Coral cover

Comparisons with other data

We found no other surveys confirmed at this site as of 2026. Within 5 km, four independent stations recorded station-year means of 30–70% hard coral cover between 2016 and 2018; the nearest, Yuanike et al. (2019) at Station 5, 2.22 km away, read a mean of 70% in 2016.

Other notes

Dive 29-Dampier Strait night muck dive: Epic night muck dive in sandy area near the pier of a nearby town. Only one coral (P. acuta) seen on entire dive. This was a muck dive in which the benthos was covered mainly by sand with pockets of trash (e.g., Image 3).

Saw small cuttlefish, squid, frogfish, barracuda, sole/flounder, shrimp (“daddy long legs” appearance), weird species of lion fish, and a wide variety of crabs, from tiny to large (edible) (e.g., Image 1, Image 3, Image 4, Image 5).

Hermit crabs in abundance. Could have spent hours here, a truly great muck dive. Got some good squid videos. Beautiful sea anemones, too (e.g., Image 2).

Independent surveys nearby

Data availability near this site
Agency / programYear(s)Stations / distanceLink
Social Ecological Research Frontiers (SERF) / University of Rhode Island (URI) / Thriving Oceans20183 stations, 2.27–4.90 kmRecords ↓
Yuanike et al. (2019)20161 station, 2.22 kmRecords ↓

Within 5 km, 4 independent survey stations recorded hard coral cover in 5 records between 2016 and 2018. The most recent nearby survey is from 2018, so these values predate recent heat stress.

Collected by other programs using different methods, so these are context for the figures above, not a like-for-like comparison. Where a station was surveyed more than once, the cell shows either the range of its values or, as a single value, the mean of surveys made in one year. Station names are not dive-site names.

Independent survey data near this site
AgencySite / locationDateHard coral cover (%)DistanceLink
Yuanike et al. (2019)Station 5201670% (2 records)2.22 kmdoi:10.13057/biodiv/d200436
Social Ecological Research Frontiers (SERF) / University of Rhode Island (URI) / Thriving OceansCape Kri201830%2.27 kmHumphries A, Amkieltiela, Tiela, Caldwell I, Caldwell I, Molfino T. 2019. SERF2_AustinHumphries_Indonesia. MERMAID
Social Ecological Research Frontiers (SERF) / University of Rhode Island (URI) / Thriving OceansYenbuba201831%3.71 kmHumphries A, Amkieltiela, Tiela, Caldwell I, Caldwell I, Molfino T. 2019. SERF2_AustinHumphries_Indonesia. MERMAID
Social Ecological Research Frontiers (SERF) / University of Rhode Island (URI) / Thriving OceansYenbuba 1201839%4.90 kmHumphries A, Amkieltiela, Tiela, Caldwell I, Caldwell I, Molfino T. 2019. SERF2_AustinHumphries_Indonesia. MERMAID

Data & links

Images 6–30: Pierre; all other images from Coral Reef Diagnostics. Data on this page are from the organizations named in the data sources above, not Coral Reef Diagnostics; Coral Reef Diagnostics has no coral cover estimate of its own at this site.

© Coral Reef Diagnostics.