The National Trust says a clear UK-wide strategy is "urgently needed" to help future-proof coastal areas from rising sea levels and extreme weather.
The Trust, one of the UK's biggest coastal owners, says many of its sites have been "battered" by storms and "hit hard" by high tides this winter.
Part of the footpath down to the golden sands of Rhossili on Gower, South Wales - recently voted the UK's best beach - has been washed away by storms.
The National Trust was founded in 1895, with its first acquisition a small area of coastal cliff around Barmouth in Gwynedd.
The iOS version of a new beaches app will be launched later this morning in Kenfig, with the Android versions also available to download in a few weeks.
In many parts of Wales, it's been the sort of day when you might have thought about heading to the beach.
Soon you'll be able to take advantage of a new app available from today which tells you all you need to know about the beach you may be heading to.
Carl Edwards reports.
A new app is being launched today with the aim of making discovering Wales' beaches easier. The app - along with its accompanying website - has been developed by environmental charity Keep Wales Tidy.
The website contains detailed information on 150 beaches including how to get there; the awards they hold and the facilities available. In addition, the app holds information on the route and gradient of the Wales Coast Path; live weather links and tide timetables.
The launch of the new app and website will take place in Kenfig later this morning and will be available to download shortly afterwards.
New research by Swansea University is helping to understand the importance of sensitive coastal habitats, in Wales and the UK, for supporting fisheries.
The research has been assessing the fish communities and their age ranges in different habitats around Wales.
Studies were conducted around the coast of Pembrokeshire and the Llyn Penninsula and were co-funded by the Welsh Government Ecosystem Resilience and Diversity Fund and the ERDF funded SEACAMS project.
Wales' industrial coast-scape comes under the spotlight in a new touring exhibition.
Photographer Roger Tiley was commissioned by the Arts Council of Wales to carry out the work, which took a year to produce.
The exhibition features photographs from various locations from the Severn Bridge to the Dee Estuary.
'The Manufactured Coast-scape' tour starts at the Cynon Valley Museum & Art Gallery on Saturday.
Plans for so called marine conservation zones around the coast of Wales have faced fresh criticism. People whose living depends on the sea or tourism fear it could seriously harm their livelihoods.
Ten sites have been proposed from Puffin Island on the eastern tip of Anglesey, along the Lleyn Peninsula, down Cardigan Bay to Dale and Skomer in Pembrokeshire. But no more than three or four are expected to be agreed by the Welsh Government by 2014.