Isaiah 14:23

the bittern (ch. Isaiah 34:11; Zephaniah 2:14). Usually rendered "hedgehog" (R.V. porcupine) in accordance with the LXX. and Vulg. and the analogy of Arabic. The bittern certainly suits the scene best, and it is said to have the hedgehog's trick of rolling itself up into an unrecognisable mass. (Tristram, Natural History of the Bible, p. 243.)

pools of water marshes, caused by the overflow of the Euphrates when the dykes and canals were no longer kept in repair.