Hydra is a minute freshwater coelenterate with a tubular body and a ring of tentacles around the mouth.
Job 41:12-14 I cannot keep silent about his limbs, his power and graceful form. 13 Who can strip off his outer coat? Who can approach him with a bridle? 14 Who can open his jaws, ringed by his fearsome teeth?
Job 41:15-17 His rows of scales are his pride, tightly sealed together. 16 One scale is so near to another that no air can pass between them. 17 They are joined to one another; they clasp and cannot be separated.
Job 41:26-29 The sword that reaches him has no effect, nor does the spear or dart or arrow. 27 He regards iron as straw and bronze as rotten wood. 28 No arrow can make him flee; slingstones become like chaff to him. 29 A club is regarded as straw, and he laughs at the sound of the lance.
Job 41:30-32 His undersides are jagged potsherds, spreading out the mud like a threshing sledge. 31 He makes the depths seethe like a cauldron;he makes the sea like a jar of ointment.32 He leaves a glistening wake behind him; one would think the deep had white hair!
Job 3:7-9 Behold, may that night be barren; may no joyful voice come into it. 8 May it be cursed by those who curse the day— those prepared to rouse Leviathan. 9 May its morning stars grow dark; may it wait in vain for daylight; may it not see the breaking of dawn.