1) Changes gradually 2) Changes over time 3) Changes slowly 4) Changes with the times 5) Crawls out of the sea 6) Develops 7) Develops changes gradually 8) Develops gradually 9) Develops over time 10) Gradually changes over time 11) Gradually develops 12) Takes eras to develop 13) Unfolds Found on https://www.crosswordclues.com/clue/evolves