The giant clam, also known as the elephant ear clam, is one of the aquatic species listed in Vietnam’s catalog of rare and endangered aquatic species that require protection, restoration, and development under Decision No. 82 of the Ministry of Agriculture and Rural Development. Local fishermen are strictly prohibited from harvesting this precious aquatic species, and any violations will be dealt with severely according to the law.

The giant clam is the largest among marine snails; in fact, it is a type of clam with a hard, thick shell featuring 4 to 7 vertical folds. The shell of the giant clam also serves as a shelter for many small fish living in coral reefs. Inside the shell is the mantle, which displays many colors, including copper brown, yellow, or green. No two giant clams have the same color pattern on their mantles. Small spots on the mantle act as “windows” allowing sunlight to pass through.

In the East Sea of Vietnam, giant clams are found offshore near Ha Long, Binh Dinh, Phu Lang, Khanh Hoa, Binh Thuan, Ba Ria – Vung Tau, Kien Giang, and other areas.