This fun new addition to our liquid gel timer family features 2 cool little sharks in a divided aquarium tank that bob and swim around as gorgeous blue gel bubbles down! Turn the aquarium sideways to create waves and see the sharks surf! Shark Tank Gel Timers are a fun office desk fidget and self-regulation sensory tool that is incredibly calming to gaze at. Constructed of sturdy plastic, but may crack or break if dropped. Recommended for ages 5+. NEAT! It takes approximately three minutes to run its course.