An IP Gateway is needed to provide the communications between your computer and the World Wide Web. A Network Switch can send the data, or packets, to the intended computer because of the capabilities of an IP Gateway Router.
What is a Sea Flea? There is much confusion about what people mean when they refer to a sea flea. While there is a marine creature of the Leptostraca family found in the waters around Australia that is called a sea flea, more often the term is actually used to describe the jellyfish larvae that can make sea bathers break out is a rash.
A water flea has only a distant relation to land-based fleas, but takes its name from its flea-like motions. Some water fleas live in acidic swamps. Land-based fleas, which bite and suck the blood of humans and animals, are different from water fleas. Water fleas consume organic material found at the bottoms of streams as well as bacteria that float in water.