Predators & defenses : Many different types of animals prey on adult sea urchins, including birds, sea otters, fishes, crabs, lobsters, octopuses, and sea stars. Eggs and larvae of sea urchins are eaten by many types of carnivorous zooplankters and by suspension-feeding invertebrates including hydroids, sea anemones, and mussels, just to name a few.
IPv4 (Internet Protocol Version 4) is the fourth revision of the Internet Protocol (IP) used to to identify devices on a network through an addressing system. The Internet Protocol is designed for use in interconnected systems of packet-switched computer communication networks (see RFC:791).
IP addresses are a part of the Transmission Control Protocol/Internet Protocol (TCP/IP) suite of protocols and will be present on every system that is connected to the Internet.The IP protocol is installed by default on most operating systems.P addresses are a part of the Transmission Control Protocol/Internet Protocol (TCP/IP) suite of protocols and will be present on every system that is connected to the Internet.