This is what a sneezing sea sponge looks like. Can we get a “bless you”? Sponges are among the oldest living multicellular organisms on Earth, but we only recently discovered that they sneeze to unclog their pores. By studying time-lapse videos of two species of sponges (Aplysina archeri and Chelonaplysilla sp) scientists learnt that the sponges expel waste products against the flow of water out of their inlet pores. This waste is contained within a mucus, basically sea sponge snot, that is movi