I personally think that [name_f]Kalea[/name_f] and [name_f]Aya[/name_f] (while lovely) are too close to [name_u]Kai[/name_u], but that is obviously up to you, and it might not bother you. [name_f]Oceana[/name_f], [name_f]Sparrow[/name_f] and [name_u]Dove[/name_u] are beautiful choices. [name_m]How[/name_m] about (not all of these are nature names, but hopefully they are on the right track):
[name_u]Ocean[/name_u], [name_u]River[/name_u], [name_f]Bayo[/name_f], [name_u]Bay[/name_u], [name_u]Poe[/name_u] / [name_u]Po[/name_u], [name_f]Marina[/name_f], [name_f]Marine[/name_f], [name_f]Marini[/name_f], [name_f]Saskia[/name_f], [name_f]Waverley[/name_f], [name_f]Layla[/name_f] / [name_f]Leila[/name_f] / [name_f]Laila[/name_f], [name_f]Oceane[/name_f], [name_u]Paz[/name_u], [name_u]Pax[/name_u], [name_f]Rez[/name_f], [name_u]Wren[/name_u], [name_f]Lark[/name_f], [name_f]Lyra[/name_f], [name_u]Calypso[/name_u], [name_u]Phoenix[/name_u], [name_f]Clover[/name_f], [name_u]Prairie[/name_u], [name_f]Pella[/name_f], [name_f]Noa[/name_f], [name_u]Akira[/name_u], [name_u]Akiva[/name_u], [name_f]Tala[/name_f], [name_f]Nahla[/name_f] / [name_f]Nala[/name_f], [name_f]Nara[/name_f], [name_f]Pella[/name_f], [name_f]Maple[/name_f], [name_u]Frost[/name_u], [name_f]Snow[/name_f], [name_u]Teal[/name_u], [name_u]Dune[/name_u], [name_f]Aphra[/name_f], [name_f]Pilar[/name_f], [name_f]Luna[/name_f], [name_f]Fern[/name_f], [name_f]Sen[/name_f], [name_f]Oona[/name_f], [name_f]Ola[/name_f], [name_u]Ballou[/name_u], [name_f]Tupelo[/name_f], [name_f]Aster[/name_f], [name_f]Magenta[/name_f], [name_f]Scarlet[/name_f], [name_f]Dasha[/name_f], [name_f]Cypress[/name_f], [name_f]Sahara[/name_f], [name_f]Sapphire[/name_f], [name_f]Marlo[/name_f], [name_f]Baja[/name_f], [name_u]Aza[/name_u], [name_f]Azalea[/name_f], [name_f]Kerenza[/name_f] / [name_f]Kerensa[/name_f], [name_f]Kezia[/name_f], [name_f]Keturah[/name_f], [name_f]Elara[/name_f], [name_f]Gem[/name_f], [name_f]Bijou[/name_f], [name_m]Indio[/name_m], [name_f]Arizona[/name_f], [name_f]Indre[/name_f], [name_u]Zola[/name_u], [name_f]Zora[/name_f], [name_f]Junia[/name_f], [name_f]Serena[/name_f], [name_f]Topaz[/name_f], [name_f]Venus[/name_f], [name_f]Plum[/name_f], [name_u]Sky[/name_u], [name_f]Thandie[/name_f], [name_f]Cricket[/name_f], [name_f]Peridot[/name_f], [name_m]Bodhi[/name_m], [name_m]Noble[/name_m], [name_f]Acacia[/name_f], [name_u]Canyon[/name_u], [name_u]Cobalt[/name_u], [name_f]Fjord[/name_f], [name_u]Harbor[/name_u] / Harbour, Lazuli, [name_u]Onyx[/name_u], [name_f]Lapis[/name_f], [name_f]Orchid[/name_f], [name_u]Sorrell[/name_u], [name_m]Tide[/name_m], [name_f]Viva[/name_f], [name_u]Vida[/name_u], [name_m]Jupiter[/name_m], [name_u]Mercury[/name_u], [name_f]Amethyst[/name_f], [name_f]Garnet[/name_f], Song, [name_u]Jet[/name_u], [name_u]Mercury[/name_u], [name_u]Silver[/name_u], [name_u]Aspen[/name_u], [name_f]Calla[/name_f], [name_f]Calista[/name_f], [name_f]Delta[/name_f].