Martin County is getting into the water park business with the opening of Sailfish Splash Waterpark at the end of April.

So far folks have snatched up nearly 9,000 season passes to play all summer on its two 4-story high waterslides, one a 253-foot closed flume speed slide; 900-foot interactive Lazy River ride; a 7,300 square-foot childrens interactive water playground with jets, sprays, slides and a 300-gallon dump bucket.

Sail canopies and fun-brellas throughout Sailfish Splash Waterpark create plenty of shade. There’s also a cafe and concession with indoor seating, lockers and more.

Sailfish Splash Waterpark, 931 S.E. Ruhnke St., Stuart.

When: 10 a.m. to 6 p.m. through Aug. 19, then 11 a.m. to 5 p.m. weekends and Labor Day until Sept. 30.

Admission: Waterpark and pool: Adults: $11.25; Age 3-12 and seniors 55 +: $8.75; Age 1-2: $3.50 includes water diaper. Younger than 1: free. Visit the website for a 20 percent off coupon.

Waterpark only: Adults: $9.25; Age 3-12 and seniors 55 +: $7.25; Age 1-2: $3 includes water diaper. Younger than 1: free.

Season passes: Residents: Adults: $45; Age 3-12 and seniors 55 +: $35. Non-residents: Adults: $67.50; Age 3-12 and seniors 55 +: $52.50.

Info: 772-320-3100; www.sailfishsplash.com

The Rapids Water Park in Riviera Beach remains the big daddy of water parks. The Rapids is the largest water park in South Florida featuring 35 slides, 25,000 square-foot wave pool, and a quarter mile lazy river.

They add a new attraction about every two years and last years additions include The Rapids Racer, a 6-person head-first downhill slide, and a new 1950’s Herschel Carousel that features 30 horses, refurbished and painted especially for the Rapids. The Rapids Racer won two awards for Best New Ride from the World Waterpark Association (WWA) and the International Association of Amusement Parks & Attractions (IAAPA).

The Rapids, 6566 N. Military Trail, Riviera Beach

When: Open daily from 10 a.m. – 7 p.m. through Sept. 30.

Admission: $36.95 Monday through Friday. $40.95 Saturday and Sunday. Sunset Special from 4 p.m. – close: $18 Monday through Friday; $20 Saturday and Sunday. Younger than 2 admitted free. Parking is $10.

Info: (561) 842-8756; rapidswaterpark.com

Palm Beach County Parks and Recreation offers two wet and wild water park choices: Calypso Bay in Royal Palm Beach and Coconut Cove in Boca Raton.

Calypso Bay features an 897-foot river ride, a lily pad walk, two four-story high water slides, a children’s water playground, a lap pool with diving boards, Locker rentals, showers and a full-service concession stand

Coconut Cove has a 986-foot river ride, a sea pals obstacle course scramble, two 220-foot water slides, and a children’s interactive water playground, and a full-service concession stand.

Calypso Bay Water Park, 151 Lamstein Lane, Royal Palm Beach. Info: (561) 790–6160.

Coconut Cove Water Park, 11200 Park Access Road, Boca Raton. Info: Info: (561) 274–1140.

Admission: Adults 12 and older: $10.30; age 3-11: $8.30; Age 1-2 $3.30 includes water diaper. Younger than 1 free. Save $2 on admission after 3 p.m.

Info: www.pbcgov.com/parks/aquatics/waterparks/