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).
Itâs all about communicating and moving data from point A to point B. They exist at different layers of the OSI model. TCP is a protocol and so is IP; the main protocols of the internet. Ethernet rules the physical layer. TCP is Transmission Control Protocol. IP is Internet Protocol. Back to basics, there are 7 layers of the OSI model.