Algal

Sixty-five percent of U.S. estuaries and coastal water bodies are moderately to severely degraded by excessive nutrient inputs, which lead to algal blooms and low-oxygen (hypoxic) waters that can kill fish and seagrass and reduce essential fish habitats.

The colorful hues of icebergs result from the interplay of light with dense ice, ice crystals, and algal growth.

Razor clamming draws crowds on the coast of Washington State. This popular recreation activity is expected to decline due to ocean acidification, harmful algal blooms, warmer temperatures, and habitat degradation.

Algal overload is common in waterways worldwide caused by fertilizer runoff and poor sewage management.

Wallace [...] came closer to the dense algal stink of the lake.