If the number of seaweed decreases what will happen to the number of mackerels?

If the number of seaweed decreases, the population of mackerels may decline as well. Seaweed serves as a crucial habitat and food source for various marine organisms, including smaller fish and invertebrates that mackerels prey on. A reduction in seaweed could lead to a decrease in these prey species, ultimately impacting the mackerel population due to reduced food availability. Over time, this could disrupt the entire marine ecosystem.