app/assets/javascripts/species.js.coffee
document.addEventListener 'turbolinks:load', ->
reef_type = $("#species_reef_safe").closest("div")
$("#species_water_type").change ->
if $("#species_water_type :selected").text() is "Saltwater"
reef_type.show()
else
$("#species_reef_safe :selected").attr "selected", false
reef_type.hide()