California Seashell Co. is one of the oldest establishments in Old town Main Street. It offers a variety of marine-themed products, such as signs, shells, shark jaws and shell novelties. The building's stucco exterior has a tropical island theme, complete with dolphins and underwater plants. It gives you the feeling of entering an underwater world, and the abundance of shell products complete the picture. California Seashell Co. is located next to Sweet Jill's. It is easy to get to Old Town Seal Beach from the 405 freeway. Just exit Seal Beach Boulevard and head south; turn right on Pacific Coast Highway, then make a left onto Main Street.