Manila Bay is one of the most polluted bodies of water in the Philippines.
It was once described as a "cesspool," but, curiously, its waters have now turned a stunning turquoise color.
The following pictures posted on Facebook show the uncharacteristically bright color of the bay, which is usually black.
In a different post, Facebook page Live-Zone PH uploaded a video showing the changing color of the bay.
The video was taken at the seaside area of the Mall of Asia.
It is unclear why Manila Bay has suddenly changed color from black to turquoise. But the going theory is that this has something to do with the decrease in pollution since the 30-day, Metro Manila-wide lockdown of March 15.
However, the striking change may also be due to other environmental reasons, such as algae bloom and chemical pollutants.
In an interview with GMA-7's 24 Oras, Commodore Arman Balilo of the Philippine Coast Guard said, "Base doon sa mga reports ng Marine Environmental Protection Command, nagdi-discolor iyong tubig, nagkakaroon ng discoloration minsan pagka merong pollutants."
While there's a community quarantine in place, we still caution everyone from attempting to take a dip in the bay.