Sea Snake is a kind of superior food with rich nutrition and delicious taste. The toxin of sea snake can cure sciatica and rheumatism.

Sepia officinalis, also called cuttle fish, is belonged to Sepiidae, cephalopod. Sepia has high nutrition value. Every 100g sepia meat has 17g protein, 1.7g fat, A100 vitamin. Other matter body needs like Calcium, phosphorus, iron, lactoflavin also can be found within sepia. It's also a good medicinal material for canker, trauma and gynaecology disease. Dried sepia sells well home and abroad.

Prawn, produced in coastal area, is a crustacean. Yingpan Town is the mainly prawn production base of Beihai. With a delicious taste and rich nutrition, every year a large amount of dry prawn, fresh prawn and prawn oil are sold at home and abroad.

Stichopus variegates is one of the sea cucumbers. It is mainly produced in Weizhou Island. It's one of the eight treasures since it has rich nutrition. It is sold well home and abroad.

Sea horse, a kind of fish, also named Long Luo Zi, is a costly medicinal material. It's good for promoting birth, relieving pain, lessening of swelling, relieving cough or asthma and so on. A popular saying “North Ginseng, South Sea Horse” proves its high value.