2.Fishery resource depletion. Fishery resources is regarded as a source of income and the output member of people for a long time. At present, marine fishery resource). Ever rich are faced with the problem of crisis.The quantity of aquatic animals, began to decline, which yield mainly from the current fisheries found that ground fish started to decrease rapidly. Using the wrong way, the fishing tool The destruction of habitat and tricky.Affect the state of the economy. And the lives of people greatly. However, besides catching many potential production than was naturally.3.Seagrass and algae. Both plants this is of great importance to the marine ecosystem greatly. As a food source and supply oxygen to other living creatures in the sea, especially the aquatic larvae and dugongs.13 types and seaweed no less than 300 type. Some kinds of seaweed is human food and also used as the raw material in the extraction of agar and Phycocolloid is alginate carrageenan which are used in the food industry, beverage Cosmetics and medicine.Seagrass beds remain in Thai waters such as in the Andaman Sea, since the province energy down to the stool. There is a very big grass source periodically connected. In the eastern Gulf of Thailand in Trat Province, ChanthaburiAnd the rays bend, the western coast of the Gulf of Thailand meet periodically from the Prachuap Khiri Khan variants, Chumphon Koh Samui Island. And Pattani. The seagrass beds, many of degradation.Seaweed, ever have abundant, such as the Trat province and Chanthaburi. Which is the source of a naturally agarophyte massively. At present, has lost almost all of it. The island of Surat Thani province.