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
Coral cover
not reported
No coral cover estimate: night dive.
Observations
not yet tagged for this site
Heat stress
Today’s heat load
16 Sep 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
30
Site summary
Read this summary in:

A night muck dive over sand near a town pier with almost no coral (a single Pocillopora acuta colony), but an outstanding critter showing - cuttlefish, squid, frogfish, and abundant crabs - amid pockets of trash on the seabed. No coral-cover figure applies to this muck habitat.

Max. depth dived
19.6 m

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

Two other CRD dive sites within 5 km shown in orange — click a marker to open its page.

5 of these 30 photographs 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

Coral cover: no figure is published for this site. Nothing on the map attaches a coral-cover measurement to this site — the account above is descriptive background, not a survey result. A value will be added if transect data, an independent survey nearby, or a computer vision pass on Anderson's own photographs becomes available.

Comparisons with other data

No independent survey was made at this exact site; the nearest ones are listed in the table below.

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 5).

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).

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).

Dive 30-“Blue Magic” (round 2): Our second dive at this amazing site. GoPro flooded within seconds. Shot to surface to return it to boat. Hopefully, did not damage it. Spent first part of dive looking for mantas. Unfortunately, no luck. However, we did see large tuna (among largest of trip), barracuda, chromis, batfish, sharks, a stingray, and other large fish. Current was much stronger than yesterday, resulting in a shorter dive (55 minutes). Spent majority of the dive at 20-25 m given such strong currents, though eventually went to top of sea mount to check out jack schools, a wobbegong, and some beautiful hard corals. No wonder this is considered a world class dive! However, we did see large tuna (among largest of trip), barracuda, chromis, batfish, sharks, a stingray, and other large fish. No wonder this is considered a world class dive! Coral cover: no figure is published for this site.

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 7 surveys 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 range is shown. 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 surveys)2.22 kmHeatCRD database
Social Ecological Research Frontiers (SERF) / University of Rhode Island (URI) / Thriving OceansCape Kri201830% (3 surveys)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 table above, not Coral Reef Diagnostics; Coral Reef Diagnostics has no survey of its own at this site.

© Coral Reef Diagnostics.