1 Sunshine State Clusters: Ready to see dogs with way better grooming habits than most people? Thousands of dogs in all breeds, even junior dogs, will compete 8 a.m.-6 p.m. Thursday through Sunday at the Florida State Fairgrounds. There will also be a dock diving competition and a special presentation to Tampa International Airport K-9 officer Vika. 4800 U.S. 301 N, Tampa. $5, children free. (941) 356-2038.
2 Symbiosis: A Sound Installation: This Saturday, surround sound speakers around the Boyd Hill Nature Preserve will broadcast ambient sounds while computers capture and manipulate the sound in real time, creating performance art. An artist talk will describe how this works before each performance. The first one is at 2 p.m. Saturday, and there will be an encore on June 24. Park admission is $3, $1 children at 1101 Country Club Way S, St. Petersburg. (727) 893-7326.
3 Go Skateboarding Day: There will be free skateboarding all day June 21 at the Skatepark of Tampa, as well as a trick jam with a secret obstacle. 4215 E Columbus Drive, Tampa. (813) 621-6793.
4 Book Talk: The University of Tampa's Lectores series returns Thursday through June 22 with readings and discussions by renowned authors. It starts Thursday with Jennifer Egan, author of The Invisible Circus, which became a movie in 2001. Friday brings Sarah Gerard, author of the essay collection Sunshine State, and Tommy "Teebs" Pico, author of IRL, follows on Saturday. All the talks are free and begin at 7:30 p.m. at the Falk Theater, 428 W Kennedy Blvd., Tampa. Complete lineup at ut.edu/mfacw/lectores.
5 St. Pete Beach Grand Prix: More than 100 AquaX racers from around the world will compete in both pro and amateur divisions on personal watercrafts at speeds of more than 70 mph. Best viewing for spectators is in front of Postcard Inn and along the water. 10 a.m.-3 p.m. Saturday-Sunday. 6300 Gulf Blvd., St. Pete Beach. Free.