Great — here are highly recommended nature-focused resorts across Sri Lanka, organized by the kind of nature experience (wildlife, tea-country hills, wetlands/wildlife buffer, beaches & marine). Short note on why each stands out, where it’s located, and who it’s best for.

Wildlife & Bush / National‑park gateways

• Jetwing Yala (near Yala National Park) — Good base for safari drives to see leopards, elephants and birds; comfortable rooms and safari-organizing service. (Best for: wildlife photography, safari-focused stays.)
• Cinnamon Wild Yala (close to Yala) — Upscale lodge with guided safaris and wildlife-friendly setting. (Best for: couples and wildlife tours.)

Wetlands, lakes, unique ecosystems

• Jetwing Vil Uyana (Sigiriya) — An award‑winning eco‑hotel built around restored wetlands and paddy landscapes; strong sustainability credentials and easy access to Sigiriya rock. Ideal for birding, wetland ecology and quiet nature immersion. (en.wikipedia.org)

Central Highlands / Tea‑estate nature retreats

• Ceylon Tea Trails (Nuwara Eliya / hill country) — Luxury lodge complex of restored planter bungalows set across working tea estate; immersive tea‑plantation walks, reservoir kayaking and guided estate tours. Exceptional for experiencing cool‑climate scenery and tea‑culture. (thetimes.co.uk)
• Heritance Tea Factory (Hatton area) — Converted colonial tea factory with dramatic hill views and easy access to hiking/tea factory tours. (Best for: scenic hill walks and tea‑region exploration.)

Beaches, marine life, dolphins & kitesurfing

• Dolphin Beach Resort (Kalpitiya) — Eco beach camp focused on dolphin- and whale‑watching, kitesurfing and marine activities; located on the Kalpitiya peninsula with mangroves and sandbanks. Great for active marine nature experiences. (en.wikipedia.org)
• Amanwella (Tangalle) — Small luxury beach resort on a quiet stretch of southern coast; excellent for sea turtles, relaxed beach time and coastal nature. (Best for: secluded beach stays and low-key nature walks.) (ndtv.com)
• Anantara Peace Haven Tangalle — Beachfront resort on a former coconut plantation with broad nature and coastal activity options (surfing, turtle sites). (Best for: beach + comfort + nature excursions.) (ndtv.com)

Historic‑coast + cultural nature fringe

• Amangalla (Galle Fort) — While more a heritage hotel, staying here puts you within easy reach of coastal nature spots and the cultural biodiversity of Galle’s coastal strip. (Best for combining low‑impact coastal walks with cultural sightseeing.) (ndtv.com)

How to pick one

• For safaris/wildlife (leopards, elephants): stay near Yala/Udawalawe (Jetwing Yala, Cinnamon Wild).
• For birds, wetlands and eco architecture: Jetwing Vil Uyana (Sigiriya).
• For cool, dramatic hill‑country nature and tea culture: Ceylon Tea Trails or Heritance Tea Factory.
• For marine life, dolphins and kitesurfing: Kalpitiya (Dolphin Beach Resort).
• For quiet luxury beaches and turtle‑watching: Tangalle resorts (Amanwella, Anantara Peace Haven).

Booking tips

• Reserve safari lodges and guided safaris in advance during high season (Dec–Apr for south/west coast; May–Sep for east coast).
• For Kalpitiya marine activities, check seasonal windows (dolphins/whales and kitesurfing seasons vary by coast).
• Compare direct hotel websites and major booking platforms for package rates; many high‑end properties offer transfers from Bandaranaike (Colombo) or domestic flights + road transfers for hill country.

If you want, I can:

• Narrow recommendations by region, budget or travel dates you have in mind.
• Check current availability or best seasonal windows for any of the resorts above.