Please add spaces between words: Inadditiontolong,sandybeaches,plainsandmountainranges,theAlgarvealsoincludestwoareasofgreatecologicalwealth:theprotectedmarshlandsoftheGuadianariver(themarshlandNatureReserveofCastroMarimandVilaRealdeSantoAntonio)andthelowlandsoftheFaroestuary,knownastheRiaFormosa.Anaturalhabitattomanyendemicanimals,theCastroMarimmarshlandsalsoprovidesheltertosome153differentspeciesofbirdsastheymigratesouthwards.
In addition to long, sandy beaches, plains and mountain ranges, the Algarve also includes two areas of great ecological wealth: the protected marshlands of the Guadiana river (the marshland Nature Reserve of Castro Marim and Vila Real de Santo Antonio) and the lowlands of the Faro estuary, known as the Ria Formosa. A natural habitat to many endemic animals, the Castro Marim marshlands also provide shelter to some 153 different species of birds as they migrate southwards.