First, the living environment of barnacles Although barnacles are arthropods, they are also very picky about parasitic objects. Generally, they will choose an environment suitable for their survival. Once they are parasitized, they will choose to stick to it forever. Unless the environment is not suitable for barnacles, they will leave, otherwise they will not leave.
The favorite place for barnacles to attach is probably whales, which are very large and slow in the ocean. Because of its large size and short fins, when whales want to clean barnacles attached to fins, they can't clean them completely. They can only rush out of the sea to clean them up.
Second, barnacles like to parasitize whales. Barnacles are generally parasitic in soft places on whales, because these places are inaccessible to whales, not to mention rich organic matter, so food is not a problem for barnacles. But what makes people wonder is why barnacles are not parasitic on sharks.
In fact, barnacles are not parasitic on sharks, because sharks move very fast, and the water around them is also fast when sharks move forward, which is not conducive to the growth of barnacles, but easy to fall off. Moreover, shark's skin is hard and difficult to attach, so barnacles will not choose to parasitize on sharks, and the environment on sharks is not good for barnacles, so in order to grow, barnacles will look for places that are beneficial to their environment. Whales are very suitable, and barnacles have strong growth ability, so even if whales want to get rid of barnacles, because barnacles breed quickly, they are a little overwhelmed.
Third, the influence of barnacles on fishermen is also very harmful to fishermen. These barnacles will stick to the bottom of the boat. In order to prevent accidents, fishermen clean barnacles every year. However, although barnacles are annoying to fishermen and whales, barnacles are also delicious. For such a love-hate marine life, fishermen sometimes have no choice.