Reef Vitals: Tubbataha North Atoll

By Steph104
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Reef Vitals

The North Atoll ranger station logs the health of one of the last untouched reefs in the Coral Triangle. This is the live readout the team checks every morning before the first dive. Numbers first. Stories later.

NOW

Patrol active. Two rangers on the water since 0540. Sea state slight. Visibility excellent.

Updated Jul 2026

Water temperature

29.4 C

Surface pH

8.06

Visibility

34 m

Live coral cover

61 percent

214turtle nests this season

7vessels intercepted in 2026

Next reef wide coral survey window opens

field
In Progress

Repair mooring buoy 4. The chain has abraded on the reef shelf.

Due 25.06.2026
survey
Open

Run the quarterly photo transect along the north wall.

Due 10.07.2026

Dawn dive kit

75%

Twin cylinders filled to 230 bar

Transect tape and dive slate

Camera and strobe charged

Replacement mooring shackle (on order)

Bleaching watch. Sea temperature has held above 29 C for nine straight days. Report any pale or whitening colonies on the south slope the moment you surface.

Travel photo 1
Travel photo 2