Inland Alaska has many lakes and rivers that are fed by Glacial Runoffs. The Glacial Silt that fills these bodies of water are not ideal conditions for fish. The sediment creates low light conditions that can limit growth of algae on the stream bed, which is one of the main sources of food for aquatic insects and in turn the fish that feed on them. The low light conditions also limits the ability of fish to see and capture prey. As a result, many of the resident fish species and anadromous Salmon have developed different ways of adapting when the levels of sediment are high.
Chinook Salmon are the largest of the pacific salmon species, and are anadromous, meaning, during different phases of their life history, they inhabit marine, brackish and freshwater habitats. As adults they migrate inland from the sea to spawn in their natal freshwater streams. One of the ways juvenile salmon have adapted to the glacial silt, is by using it to their advantage to provide visual cover from their predators, protecting them while in a vulnerable stage of growth.
It’s amazing to me the adaptability of life. The quote from Jurassic Park: “Life finds a way” perfectly sums it up. There are always changing conditions that affect life, but if you can adapt, something that may bring harm can also become a source of blessing. When you adapt to the changes in your environment, you can find blessing in the obstacles.