Massive fish kill in Taal Lake after Taal Volcano eruption in the Philippines – Active degassing in the lake bed


After covering up the sulfur dioxide emission prior the Taal Volcano explosion on July 1, 2021, officials in the Philippines want you to believe the massive fish kill reported on July 6th in Taal lake is not linked to the eruption… A video clearly shows signs of degassing and thus acidification…

Active degassing from Lake Tall bottom
Active degassing from Lake Tall bottom. Picture via Youtube video

More than 100 metric tons of tilapia and milkfish or “bangus” died in Taal Lake in Batangas, following the eruption of the Taal volcano on July 1, 2021, the Bureau of Fisheries and Aquatic Resources (BFAR) said Tuesday, July 6th.

BFAR-4A Regional Director Sammy A. Malvas said an estimated volume of 109 metric tons of bangus and tilapia valued at P8.999 million had died during the latest fish kill in Talisay, Batangas.

fish kill lake tall philippines, Massive fish kill reported in Tall Lake after Tall volcanic eruption on July 1, Massive fish kill reported in Tall Lake after Tall volcanic eruption on July 1 video, Massive fish kill reported in Tall Lake after Tall volcanic eruption on July 1 photo
Massive fish kill reported in Tall Lake after Tall volcanic eruption on July 1, 2021.

Officials quickly ruled out Taal Volcanic eruption as a possible cause for the mass die-off: “There is no direct link between the sulfur emission of Taal Volcano to the lowering of dissolved oxygen in the lake (Walang direct na kaugnayan yung sulfur na binubuga ng bulkan. Walang koneksyon doon sa pagbaba ng dissolved oxygen),” the regional director said.

Based on the latest Taal Lake water quality assessment from July 5, the dissolved oxygen (DO) in several areas such as Tanauan and Talisay registered at 2.38–3.80 milligrams per liter (mg/L), which is significantly lower than the standard level of 5.0 mg/L for dissolved oxygen.

Furthermore, the levels of ammonia (0.12–0.21 mg/L) and sulfide (0.01–0.10 mg/L) were also “above the standard levels harmful to fishes.”

What about water acidification?

According to Malvas, the only possible effect of Taal Volcano’s unrest is turning its waters acidic. But the water quality analysis results show this is not the case:

As of yesterday, the water in Taal Lake wasn’t acidic. It remains alkaline or basic level. The water is not acidic so there is no direct link between the sulfur from the volcano and the low level of dissolve oxygen. (Hindi po acidic yung tubig sa lawa as of yesterday. Nasa alkaline pa o basic. Hindi po siya acidic so wala pong direct na link yung binubugang sulfur ng bulkan doon sa pagbaba ng dissolved oxygen),” the official explained.

Amid reports about widespread fish death in the Lake Taal in Bulkan Taal, some divers made an underwater video showing active degassing into the lake bed.

Notice how the divers flinch from the heat of the gas.

I would not eat these fish.

So now it’s time you connect the dots… Water acidification due to volcanic unrest is the most plausible cause of this massive fish kill… What do you think? [mb]

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1 Comment

  1. 🐟🐟🐟🐟🐟🐟🐟🐟

    Another fishpocalypse. Tons of fertilizer for sale.

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