Advances in Breast Cancer: General surgeon Larry Williams will discuss the latest risk factors associated with breast cancer, latest medical advances and surgical treatment options available. Noon. Free. St. Anthony's Hospital, 1200 Seventh Ave. N, St. Petersburg. (727) 953-6993.
Carousel: Inspired by an old-fashioned slideshow, this event provides photographers of all skill levels with an opportunity to present their work before a live audience and get feedback through discussions. 7 p.m. $3. Studio@620, 620 First Ave. S, St. Petersburg. (727) 895-6620.
Summerland Tour: Feel the floor rumble as four rock bands perform including Everclear, Live, Filter and Sponge. 7:30 p.m. $15-$69. Mahaffey Theater, 400 First St. S, St. Petersburg. (727) 893-7832. mahaffeytheater.com.
Fat Joe: The rapper, known for tracks like Flow Joe and What's Luv?, will perform his hits during this special performance. 9 p.m. $10, free members. Push Ultra Lounge, 128 Third St. S, St. Petersburg. (727) 871-7874. pushlounge.com.
Bay 5K for Kids: A family friendly 5K run/walk that starts at scenic Vinoy Park and winds around the downtown waterfront and the historic Old Northeast neighborhood. Portion of the proceeds will go to the Ronald McDonald House of All Children's Hospital. 7:30 a.m. $25 advanced, $30 after May 1, $10 ages 10 and younger anytime. Vinoy Park, 501 Fifth Ave. NE, St. Petersburg. (904) 501-9401. roadraceplace.com/races/bay-5k-for-kids-florida-st-petersburg.
Rain Harvesting: Learn how to collect rainwater in a recycled plastic barrel for your flower, herb or vegetable gardens, while saving money on water bills in rain barrel workshop. Registration required, at pce- lawnandgarden.eventbrite.com, or call. 9-10:30 a.m. Free class, optional rain barrel is $25. Pinellas County Extension Service, 12520 Ulmerton Road, Largo. (727) 582-2108.
Youth Splash N' Dash: The Youth Splash N' Dash features a half-mile run, 100-yard swim and quarter-mile run for ages 7 to 10, and a 1-mile run, 200-yard swim and half-mile run for ages 11 to 14. Part of the Madeira Beach Triathlon weekend. 8 a.m. $45. Archibald Park, 15100 Gulf Blvd., Madeira Beach. (813) 417-0324. madeirabeachtriathlon.com.
Children's Fishing Derby: Children ages 12 and younger can try their hand at fishing. Prizes will be awarded in fun categories and everyone fishing (plus families) gets free food while it lasts. Bait and fishing poles will be provided, or feel free to bring your own. 8 a.m. Free. Freedom Lake Park, 7770 52nd St., Pinellas Park. (727) 541-0895.
Learn the Basics of Dog Training: A certified dog trainer will teach house training, loose-leash walking and dealing with other challenging behaviors such as chewing and jumping. For owners only. Dogs not invited. 10 a.m. Free. Pinellas County Animal Services, 12450 Ulmerton Road, Largo. (727) 582-2600.
Aqua Zumba Bash: Nonstop dancing to high-energy music in 4 feet of water. Includes chair massages and door prizes. 11 a.m.-1 p.m. $10 advance, $15 day of. Southwest Recreation Complex and Pool, 13120 Vonn Road, Largo. (727) 518-3126.
Starting from Scratch: This two-day workshop with a cat harness demo focuses on massage techniques and body language tips. The second portion will be held June 8. 2 p.m. $20, $15 SPCA adopters. SPCA Tampa Bay, 9099 130th Ave. N, Largo. (727) 586-3591.
Synchronized Swimming: The Suncoast Waterworks team presents the Big Top Synchro Show, combining music, dance and aquatic athleticism. A free synchronized swimming clinic will be held before the show (5 p.m.). 7 p.m. $8, $5 children/students/seniors. Southwest Recreation Complex and Pool, 13120 Vonn Road, Largo. (727) 669-4115.