See Sea Creatures for Less
Aquarium ticket prices can be scarier than great white sharks, but as a way to see exotic marine life, an aquarium visit is a bargain compared with the cost of a diving trip. Visitors who buy tickets through an aquarium's website often save a few dollars and skip the line. Coupons or cheap tickets are sometimes available from local stores, tourist brochures, and daily deal sites, and AAA members and active-duty military usually get a discount.
Another option is to join a local aquarium or zoo accredited by the Association of Zoos and Aquariums to receive discounted or free admission to aquariums participating in the AZA reciprocity program. Membership is often more than $100 but may be worth the cost for aquarium enthusiasts. For everyone else, here are 11 aquariums that offer adult admission for about $20 or less (before taxes). If the cost still seems high, remember that aquariums are often nonprofits that dedicate funds to protecting aquatic life and the environment, so a day of fun benefits a good cause.