Natuna rhymes with:
altoona, antuna, fortuna, tuna, acuna, altoona, antuna, bruna, buena, deluna, duna, fortuna, garrido-luna, hoonah, iduna, kahuna, koruna, kuna, laguna, luna, mezzaluna, miscayuna, oona, osuna, ozuna, tuna, una, vicuna
Natuna sounds like:
nadein, nadine, nandaime, natan, nathan, nathania, nathene, nation, nayden, needham, neoteny, netan, netanyahu, newton, newtonian, newtown, newtowne, nineteen, nodine, nomination, noontime, notation, nothin, nothin', notion, nowotny, nutone, nydam