Murghandir, the Coastal Guards

an omnivore behemoth crustacean, residing in stoney-shorelines and underwater caves of Ark-ohm; also known as the "Coastal Guards". Capable of wiping out an army in a matter of seconds. They are territorial and hostile to intruders that are spotted in their peripheral vision. Casual approach is not advisable. They hide themselves by disguising as one of the rocks on the shorelines, capable of mimicking the surroundings through camouflage.