Which aquatic invertebrate is known for clogging pipes and water intakes?

Clams are known for their tendency to clog pipes and water intakes due to their ability to create dense populations in freshwater and estuarine environments. As filter feeders, clams can form large colonies, increasing the likelihood of blockages in water systems. The accumulation of clams in these areas can lead to significant operational problems as they obstruct water flow, making it challenging for facilities such as water treatment plants and irrigation systems to function properly.

In contrast, while freshwater shrimp, crabs, and prawns may be present in similar environments, they do not exhibit the same propensity for creating the dense, stationary populations that clams do, nor are they as effective at obstructing water systems in the same manner. Therefore, clams stand out as the aquatic invertebrates most notable for causing clogs in pipes and water intakes.