The World map has its ambience, every sound scaled by the zoom the way Crusader Kings 3 does it: near silent with the whole world in view, full volume close in, on a log scale bent so it stays quiet until the map is fairly close. Looping all the time: the sea's wash (softer over the land close in); a harbour's bustle whenever a marina is on screen (louder the bigger it is on screen); wind, a little always and strong under a storm, and rain under one. Now and then (every 4-9 s close in, longer further out, and only from a third of the zoom's range in) an animal in view calls: one is picked at random from the birds at the ports on screen (each species weighted by its numbers: gulls, terns, pelicans, cormorants, shearwaters, eiders, scoters, herons, egrets, bitterns, cranes, night herons, eagles, hawks, falcons, ospreys, condors), the pods in view (humpback whales, orcas, seals, sea otters) and the land's animals in view (bison, grizzly bears, elephants, giraffes, lemurs, lions, orangutans, tigers, penguins, kiwis, quetzals, toucans); a call starts at the beginning of its recording (seeking into one decodes its way there, tens of ms) and fades after 8 s; three can sound at once.
Birds call as their own species where a free recording of the species was found, the kind's recording otherwise; the 42 without one anywhere free (the other gulls, both frigatebirds, the albatrosses, the royal tern, two pelicans, the sooty shearwater, five cormorants, three eiders, four scoters, the Goliath heron, the reddish egret, the Australasian bittern, the red-crowned, whooping and grey crowned cranes and the brolga, the brown falcon, four eagles, the rough-legged hawk) call as their kind. Whenever a bird calls, the sound tracker at the top left of the map shows the very bird that's calling, drawn big in its mirror image as the map draws it, its species' name, and a speaker mark whose waves flicker while the call plays; it fades when the call ends.
Maritime Empire