So they can get nutrition by filtering water.
An example of commensalism is the relationship between barnacles and whales. Barnacles attach themselves to the skin of whales and benefit by getting a free ride through the water and access to nutrients. The whales are not significantly affected by the presence of the barnacles.
Barnacles are actually very helpful to whales. The relationship that they have is mutualism. They attach on to them and they eat the algae and the other harmful things on them. The whales don't mind the barnacles because the whale acually benefits off the barnacles. Barnacles are benefited because they eat the things that are on the whale
commensalism
They aren't symbiotic : the barnacles (crustaceans related to crabs) are parasites on the whale's skin, and will also attach to boats, docks, and other marine locations.
Barnacles benefit from living on whales, and they do not hurt the whales.
They would stay on the whales
The relationship between whales and barnacles is not necessary for the survival of either organism. While barnacles can benefit from attaching to the skin of whales to filter feed, whales are not dependent on barnacles for their survival. Whales have other food sources and means of maintaining their health.
Barnacles form a symbiotic relationship with whales by attaching themselves to the whale's skin or baleen plates. The barnacles benefit from the whale's movement, which provides them with a constant flow of food-rich water. In return, the barnacles can cause some drag on the whales, affecting their swimming efficiency and potentially increasing energy expenditure.
The grey whale has a symbiotic relationship with barnacles. The barnacles attach themselves on the whales and are transported to new locations in the ocean. Whales are not harmed in the process, and the barnacles benefit from the new food sources.
i think you're talking about barnacles
yes
commensalism == the barnacle living on the whales back gains safety and protection where as the whales does not either gain or lose anything from the relationship