海島市

海 = 每 + 氵 : Due to the runaway greenhouse effect, the oceans have risen and the airplane has been flooded. To do his daily workout, Hamlet has to do a handstand on two water bottles and do his push-ups this way.

海 = 每 + 氵 : Due to the runaway greenhouse effect, the oceans have risen and the airplane has been flooded. To do his daily workout, Hamlet has to do a handstand on two water bottles and do his push-ups this way.

岛 = 乌 + 山 : Don Quixote (d) is trapped on a remote island (岛) inside of the aortas (ao3). The only animal on the island is a black crow (乌), and Don Quixote is chasing it with a fork (山) round and round the island, trying to catch it.

市 = 亠 + 巾 : Mnemonic symbol: a supermarket.

Sherlock Holmes (sh) started a supermarket (市) in the space station's bathroom (Ø4), but all he has for sale right now are berets (亠) and towels (巾). He should have opened it at the beach!