Coral Reef Diagnostics

Philippines - Cebu (Moalboal)

Reef Check Foundation
⬇ Download this page as a report card
05
Survey date(s)
2013-02-10
2013-02-11
Coordinates
9.9500, 123.3800
Coral cover
—
not yet measured
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 — Eastern Philippines 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 infoEastern Philippines (NOAA CRW virtual station) · Eastern Philippines ecoregion mean=7.5°C-heating weeks
Max. depth dived
32.0 m
deepest of 4 logged dives

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

Site description

Setting

The Moalboal marker sits on the Panagsama Beach shorefront on the southwest coast of Cebu, facing Negros across the Tanon Strait and stands for four dives logged with Blue Abyss over 10 and 11 February 2013.

General benthic features

They show the configuration the log describes: a narrow, shallow, sandy-to-rubble flat running up to a beachrock and rubble margin, green algal or turf tone over the intertidal platform, and an abrupt shift from pale turquoise to deep blue within a very short horizontal distance. Several frames read a mottled bottom in roughly half a meter to two meters of clear water, but no colony is resolved and no genus is offered.

Coral cover

No coral-cover estimate exists for this site, and neither computer vision model has been run on it.

Stressors

Nothing bleached, diseased, recently dead, or crown-of-thorns-affected is visible, which is a limit of the imagery rather than a finding. Shorefront development is dense and built to the waterline, and moored bangkas are numerous.

Comparisons with other data

Three further stations within 2 km run from 11.9% to 31.9%, so the external figures describe this coast rather than these dives. No coral-cover value exists for this site.

Dive record

"Sambaguita" on 10 February ran to 19.2 m over 68 minutes with 15.2 m visibility, most of it on a wall at about 10 m, and the log records that in 3 to 4 m at the end of the dive the bottom was near-continuous coral for as far as he could see, mostly branching Porites. "Pescador Island" the next morning was a wall dive to 32.0 m over 63 minutes with 19.8 m visibility, logged with abundant Montipora in the shallows, turtles, a small frogfish, and a scorpionfish. "Talisay" that afternoon, 22.3 m over 60 minutes, is the dive he rated best of the trip for coral, close to continuous cover for most of its length and genus-rich, with poritids, agaricids, acroporids, pocilloporids, fungids, and gonioporids all logged. A night shore dive on the house reef followed, 10.1 m over 65 minutes, with a juvenile blue-ringed octopus, squid, two turtles, and decorator crabs.

Other notes

All 19 photographs in the iCloud folder were reviewed and all 19 are topside.

Dive history

DateTime inMax depth (m)Bottom time (min)
2013-02-1013:4519.268
2013-02-1109:1532.063
2013-02-1114:0022.360
2013-02-1118:1510.165

Independent surveys nearby

Hard coral cover over time — this site and every independent station within 5 km. Programs are shown separately because they use different methods at different stations; the lines are not one comparable series.
0%15%30%45%60%20052007Reef Check 2005: 14%Reef Check 2005: 20%Reef Check 2005: 21%Reef Check 2005: 29%Reef Check 2005: 41%Reef Check 2005: 44%Reef Check 2006: 12%Reef Check 2006: 23%Reef Check 2006: 28%Reef Check 2006: 56%Reef Check 2007: 17%Reef Check 2007: 31%Reef Check 2007: 32%Reef Check 2007: 38%Reef Check 2007: 51%Year-averaged across all programs: no detectable trend (+2.89 pp per year, not separable from zero; 3 years)
Reef CheckYear-average (no detectable trend)

Within 5 km, 8 independent survey stations recorded hard coral cover in 28 surveys between 2005 and 2007. Of the 5 stations surveyed in more than one year, 1 declined, 2 increased, and 2 changed by less than 5 percentage points between their first and latest surveys. The longest record, Poblacion East (Reef Check, 1.91 km away), went from 29% in 2005 to 32% in 2007. The most recent nearby survey is from 2007, so these values predate recent heat stress.

Collected by other programs using different methods (Reef Check uses point-intercept transects), 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
Reef CheckBanlot Tongo Basdiot2005–200717–20% (4 surveys)1.69 km—
Reef CheckPoblacion East2005–200728–32% (6 surveys)1.91 km—
Reef CheckPoblacion West2005–200721–38% (4 surveys)1.98 km—
Reef CheckSaavedra Site 1200544%2.81 km—
Reef CheckSaavedra Site 2200541%2.82 km—
Reef CheckTomonoy2005–200714–31% (6 surveys)3.45 km—
Reef CheckTongo200612% (2 surveys)1.91 km—
Reef CheckBasdiot (North)2006–200751–56% (4 surveys)2.18 km—

Data & links

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.