In short - close by you can do the following: some of Wales very best Sea Angling (Bass, Flounder, Mackerel, Tope and Golden Grey Mullet to name a few local species), Surfing, Golf (6 golf courses in Gower), Birdwatching, Paragliding, Jet Skiing, Swimming, mountain biking, rock climbing, yachting, canooing, archery, horseriding/trekking, scuba and snorkelling, League Football and top flight Rugby Union are all available either in Gower or nearby Swansea and Mumbles.
Contact the following:-
Golf
Pennard, Langland, Clyne, Gower, & Fairwood Golf Clubs are all in or at the outskirts of Gower (and Machynys Golf Club is close by at Trostre, near Llanelli). Gowerton houses a driving range. Details below.
See Map of clubs below within Gower. To help you navigate Fairwood (left) and Clyne (right) are the two blue dots below village of Killay in the map. Gowerton Golf Club is the one near Penclawdd, Pennard Golf Club is near Penmaen, and Llangland Bay is just east of Mumbles.
Other Golfing sites of possible interest to Gower visitors
Fishing tackle and bait at Country Angling at Gowerton, or Rogers Tackle at Swansea Marina - also Mainwarings in Sketty Cross, Swansea. The best venues are Mumbles Pier (for kids) and Crabbart, Fall Bay, Port Eynon point, Pennard Cliffs and Whiteford for Sea Bass, Mackerel and Tope.
Archery
Contact Perriswood Archery centre, Penmaen/Nicholaston, South Gower.
A day at Margam Park has much to offer. East of Port Talbot some 25 miles east of Reynoldston, Gower, Margam Park is steeped in a wealth of history, natural beauty, wildlife and fun activities. It's magnificent 18th Century Orangery and picturesque Margam Castle are set in 800 acres of beautiful parkland with lakes, ornamental gardens and herds of Fallow, Red and Pere David deer. The newly restored gardens, a narrow gauge railway, adventure playground, Fairytale Land, farm trail and an unique Fuchsia Collection are some of the features which contribute to the experience together with a programme of seasonal events for all to enjoy. Set in 1000 acres of glorious parklands, Margam Country Park offers beauty, history, wildlife and a wide range of facilities to make it one of the best days out in Wales for all the family. It has surprises around every corner, from the magnificent 18th Century Orangery, an impressive Tudor-Gothic style Victorian Mansion House, a 12th Century Chapter House, to the unique Fuschia Collection and the newly restored historic gardens around the Castle,the Monastic Gardens and Orangery Terrace.
A pair of powerful binoculars is left at the cottage for your use if going birdwatching. See the Snipes, Little Egrets, Oystercatchers, Grey Herons, and rRinged Plover at Llanrhidian Marshes, Whitford Burrows, Llandimore Pill, or Penclawdd. See Kitiwakes and various gulls at Worms Head.
Everything you might wish to know at a glance is found on this website.