REPUBLIKA.CO.ID, JAKARTA -- Hundreds of fishes died in Jakarta bay, especially in Ancol beach. However, this was not the first time, because the death of hundred of fishes commonly happened after entering the change of seasons.

"It depends on environmental conditions," said observer of marine ecosystems, Dietrich Bengen, to Republika.co.id, in Jakarta, Tuesday (1/12).

Dietrich explained, bad water ecosystems made marine life could instantly die. It was different if the condition of the ecosystem was still slightly contaminated.

Mass death of fishes that occurred Jakarta bay was indicating the waste that entered the waters has exceeded the limit. It was also because there were 13 streams that empty into the bay of Jakarta, including the streams from Banten and West Java.

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Dietrich admitted, until now she has not have exact data on the amount of pollution in Jakarta bay, especially in Ancol. She said the increased density of population and industrial developments  in Jakarta, have certainly contributed to the accumulation of waste that flows into Jakarta bay.

"If the sea was not polluted, the fish would still die in another place because they kept moving. But this case is different," said Dietrich.

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