Ammonet

The shell of the ammonet is truly enormous, some specimens reaching 4 meters (13 feet) in diameter. The shell acts as a protective armour, as well as a float to keep the animal in the fertile surface waters. It has twelve tentacles that it spreads out around itself, and each of these has thousands of trailing fibers that are armed with stings and hooks. The whole arrangement forms a deadly net that covers an area of about 20 meters (67 feet) in diameter. The ammonet will eat almost anything that becomes entangled in its traps, from microscopic floating plants, to fairly large fish. Many krakens often drift in the same area of productive waters, their floating shells acting as perches for migrant birds and pterodactyloid pterosaurs.