For their livelihood on Tam Giang - Cau Hai lagoon, local fishermen are increasingly using destructive tools and equipments unfriendly to the environment such as Gia cao, Cao rong, Te queu, Nao hen, Cao luon, Electrifying pod, etc. The use of these tools and equipments is negatively affecting the environment such as damage of bottom biotop and bottom vegetation and other aquatic plants species
massive losses of aquatic living resources
water pollution
reduce of water circulation
and lead to difficulties for the monitoring of relevant governmental agencies.