Great Lakes Aquarium celebrates the 11th birthdays of two otters: Agate and Ore. Otter birthday cake is served along with otter-themed crafts, animal encounters, touchpool experiences and a SCUBA show.

See online for full schedule.

Tickets are free for members and for children under two-years-old. Tickets are $16 for children (ages 3-17), $19 for seniors (ages 62 and older) and $20 for adults.