The ocean monuments from the Release 1.8 Minecraft update introduce 4 new blocks (prismarine, prismarine bricks, dark prismarine, and sea lantern), 2 new mobs (guardians and elder guardians), and 2 new items (prismarine shards, prismarine crystals). You can use these items to craft 3 of the 4 new blocks.
What is a natural levee and how is it made? -Natural Levees are formed by the river in its process of flooding -A natural levee is formed by a deposit of sand or mud built up along, and sloping away from, either side of the flood plain of a river or stream.
The history of man's attempts to control the Mississippi is full of both success and failure. Levees already existed when the first French trappers ventured into the wilds of Louisiana. These levees were formed naturally by the Mississippi's fluvial processes and tended to be no more than a meter or two in height. Building up these natural levees was the first solution to the flooding problem. In 1717, the first manmade levee system was started by Bienville, the founder of the city of New Oreans. The construction of the first levees, which reached only three feet in height, was completed in 1727.