Shrimp mainly feed on algae and other plant particles along with tiny fish and plankton in the water. One species of shrimp is known to stun it's prey before eating it by making a loud noise with one of it's claws, that makes a snapping sound through the water.
Here is a chart from breakthroughbasketball.com. Hope it helps! Men's Basketball: 22 ouncess. Women's Ball: 20 ounces. Youth Ball: 17 ounces. Size 4: 14 ounces. Another Size 4: 11 ounce. Mini Ball: 10 ounces.
Boys, of middle school to high school age generally use a size 7 basketball, also known as a regulation or official size ball. This is the same size ball used by college and professional men's basketball teams. It measures 29.5 to 30 inches and weighs between 20 and 22 ounces.