Here are several Bentota hotels (and one villa/resort) known for on‑site or easily arranged water‑sports — with the main activities they offer and a quick note about location/season.

• Centara Ceysands Resort & Spa — full on‑site water‑sports centre: jet‑skiing, wakeboarding, snorkeling, kayaking, sailing, banana‑boat, scuba diving and river safaris (river on one side, ocean on the other). (thefittraveller.com)

• AVANI (Anantara) Bentota Resort & Spa — offers windsurfing, wakeboarding, water‑skiing, scuba/snorkelling and Madu Ganga (Bentota River) safaris; instructors and equipment available. (anantaravacationclub.com)

• Taj Bentota Resort & Spa — concierge arranges a broad water‑sports programme: canoeing/sailing, snorkeling/diving, jet‑skiing, water‑skiing and windsurfing. (tajhotels.com)

• Club Bentota — established watersports centre with jet skis, water skis, surf boards, speedboats, banana boats and trainers for beginners. (clubbentota.com)

• Bentota No.1 Beach Resort (villa/resort) — arranges jet‑skiing, wakeboarding, water‑skiing, banana‑boats, mangrove/river boat trips and diving excursions directly from the property. (bentotano1.com)

• Marina Bentota / Marina Bentota Hotel — beachfront property that arranges/hosts jet‑ski, banana boat, kayaking, scuba and deep‑sea fishing via its water‑sports centre. (traveltriangle.com)

• Wunderbar / Cinnamon Bentota Beach and several mid‑range beach hotels — commonly offer windsurfing, water‑skiing, banana/tube rides and local snorkel/diving trips (often arranged through the hotel or local operators). (rooftoppoolguide.com)

Quick practical notes

• Peak season for calm water and widest water‑sports availability in Bentota is generally November–April; some activities run year‑round but can be limited by sea conditions. (visitarelanka.com)
• Most hotels charge extra per activity and require briefings / sometimes age/weight limits — always confirm pricing, safety rules and instructor availability with the hotel on arrival. (Common practice across Bentota operators.) (us.lakpura.com)

If you want, I can:

• pull up direct contact or booking pages for any of these properties, or
• give a short comparison (best for families, best for adrenaline sports, best river versus ocean access).