Shoulda Put a Fin on It This is the first time that working out is a "want to" while on summer vacay. This season, the resort welcomed two unique fitness classes to its already fantastic lineup (including yoga on the beach): Mermaid Fitness and Beach Spin. During Mermaid Fitness, Ariels-in-training are invited to don a colorful tail and take part in a 45-minute fitness class at the spa pool that focuses on swimming, core, cardio and strength training. For the ultimate view, Beach Spin is 50 minutes of cycling action while overlooking the Pacific on cool SoCal mornings. Plus, spinners enjoy upbeat music via Beats by Dre headphones during the session. (Though most fitness classes at Hotel Del are complimentary for guests, Mermaid Fitness and Beach Spin are an additional cost.)