First in PH media: UNTV underwater drone explores Manila Bay’s murky seabed
MANILA, Philippines — On the surface, the sight of Manila Bay may be viewed as clean and fresh as if it has returned to its original, unspoiled state.
But what seems to be a beautiful sight on the surface of the bay is not what it looks like below.
For the first time in the history of Philippine media, UNTV News and Rescue team explored what lies beneath the inviting waters of Manila Bay.
Using UNTV’s underwater ROV (remotely operated vehicle) drone, the team first took a look at the section of the bay in Padre Faura.
Aside from the low tide, the underwater drone was not able to swim farther, but it was able to capture a long stretch of marshy, muddy ground in the area.
Next stop was in Remedios area.
The underwater drone was able to reach 10-feet below the water surface but not a single sign of life was seen. Instead, the drone captured an assortment of trash, a lot of them, that had taken the place of corals on the seafloor.
On the surface, the water seemed clear but turned yellowish to greenish to deep black as the drone swam deeper.
As a proof of Manila Bay’s “dark secrets” underneath, the underwater ROV got tangled with some plastic trash when it emerged from the water.

The Department of Environment and Natural Resources (DENR) admitted that Manila Bay’s seabed has grown ‘mountains’ of garbage that were washed to this portion of the bay in the past 40 to 50 years.
The DENR has decided to dredge Manila Bay 300 meters from the shoreline and up to three meters below to clean out the garbage from the seabed. The operations will be carried out with the help of the Department of Public Works and Highways (DPWH).
“Hahabulin po namin ang tamang lalim at ang goal namin (ay) una, ma-expose ang beach materials o ang sand. Pangalawa, sa pamamagitan din ng pagtanggal na iyan, hopefully, it will contribute sa improvement ng water quality,” explained DPWH, Bureau of Equipment director Toribio Noel Ilaw.
The DENR, meanwhile, reported a decline in fecal coliform level in the waters of Manila Bay.
Based on the test conducted on water samples in the Padre Faura area, from 330 million most probable number (MPN) per 100 milliliters before the rehabilitation efforts began, the coliform content reduced to 54 million MPN/100ml and even lower to 7.5 million MPN/100ml.
In Remedios area, fecal coliform level reduced from 160 million to 35 million MPN/100ml while in Manila Yatch Club area, it reduced from 1.3 billion to 52 million MPN/100ml at present.
“(Paano) bumaba? The Manila Zoo was the big culprit and when they closed it, they did not dump their waste. (So) there is now 52 million from a high of 1.3 billion,” noted Environment Secretary Roy Cimatu.
Cimatu added that the crackdown on establishments polluting Manila Bay by ordering ‘cease and desist’ and issuance of notice of violations prompted a stop in waste discharges and contributed to the lowering of coliform level in the bay.
Despite these improvements, environment and health officials still do not recommend recreational swimming as health hazards of contaminated water remain high anywhere in Manila Bay. – Marje Pelayo (with reports from JL Asayo)