Indonesian marine environment pollution level is still high, marked among others by the occurrence of eutrophication or increasing the amount of nutrients caused by pollutants. "Nutrition is excessive, generally come from industrial waste, domestic waste such as detergents, and agricultural activities in watersheds that enter the sea," said H. Soen `an Poernomo former CTF Kapusdatin
Pollution at sea can also be characterized by an increased growth of phytoplankton or algae are excessive and tend to rot quickly. Cases of pollution in the marine environment, the so-called red tide that, among other things, in estuaries, such as the Jakarta Bay in 1992, 1994, 1997, 2004, 2005, 2006.
In Ambon occurred in 1994 and 1997, in the waters of Cirebon-Indramayu in 2006 and 2007, the Bali Strait and estuaries in coastal waters east of Bali in 1994, 1998, 2003, 2007, and in East Nusa Tenggara in 1983, 1985, 1989.
Although often the case, an inventory of the occurrence of red tide in Indonesia until now still has not been recorded properly, including losses. "Maybe the lack of data collection is due to red tide occurrence is only a short time," he said.
Therefore, to overcome the red tide as a disaster, some government agencies and educational institutions have been doing research though still sporadic.
In general, economic losses as a result of this red tide, is a fisherman who catches plummeted, farmers failed to harvest the shrimp and milkfish, and less tourists because the beach to be dirty and smelly by the dead fish.
Effects of red tide is also shown decreased levels of oxygen and increased levels of toxins that cause the death of marine biota, water quality degradation, and of course disturb the stability of populations of marine organisms.
"As a result of ocean covered by algae at the time of abundance, then the sun it is difficult to take into the seabed and ultimately leads to reduced oxygen levels in the ocean," he said.
In addition, some algae also contain toxins or poisons that can cause fish kills and threaten human health and even cause death if consumed fish is dead. "Without the waste, as a natural phenomenon of increased growth of algae is actually very rare," he said.
While Slamet Daryoni of Walhi Jakarta said that heavy pollution, especially in the sea area near the mouth of the river and major cities. Apart from the pollution that comes from excessive industrial waste, marine pollution is also caused by the exploitation of oil and gas in the ocean. But most important is the result of government policy and even less attention to maritime affairs in Indonesia.
Furthermore Slamet Daryoni explained that on the other hand, the level of pollution in several cities including Jakarta was very apprehensive, for example, is as nothing to do with policies that do not favor the environment. In Jakarta Bay waters only, the condition has reached 62 weight defiled a message. Though this happened in Jakarta, the central government, the policy center. Moreover, when the government makes policy on this matter in 2007. Then on the river. Jakarta has three rivers. Pollution in the context of heavy impurity has now reached 94 percent.
Slamet Daryoni also explain the gas and oil exploration activities adjacent to the sea. Remaining disposal dumped in the ocean. For example we see again the case of Minahasa which resulted in residents experiencing tremendous pain caused by arsenic, mercury and other chemicals.