Cafe Under the Sea sits in an alley off Nonhyeon-ro 80-gil in Gangnam-gu, Seoul, reached by walking from Yeoksam Station Exit 1 toward Guyeoksam Sageori. It is a cafe and pub that serves coffee alongside draft beer, international beer, wine, and cocktails. French fries arrive in a hot cast-iron dish, with dried pollack served as a snack alongside. A CU convenience store is on the floor above, the semi-basement inside is larger than it looks from outside, and the coffee machine is turned off late in the evening so coffee cannot be ordered.