Bubbles don’t only occur in the bathtub, they also are found in nature. Hawai’i Nature Center is hosting a class on how insects use bubbles, 9:30 to 11:30 a.m. March 4. Then kids ages 3-5 can make their own bubbles, because what’s a Bubblemania class without a little soapy fun? Reservations required; call 955-0100, ext. 118. $10 per person.