Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Aerial view of herring actively spawning along Kayak Island Alaska. Active spawn is measured in 'miles of milt’ and used to estimate biomass of the spawning herring population. Milt is the seminal fluid from male herring and appears along the shallow shoreline, obscuring the bottom. The shallow water appears milky and opaque, and concentrated milt can be seen in bright white clumps closer to shore. A small gillnet boat is pictured here, just outside of the active spawning area.
Image property of Alaska Department of Fish and Game. Contact ADF&G for use.
Two groups of sea lions can be seen some distance away from the shore in deeper water. Sea lions are herring predators, feeding on herring while they spawn. Therefore, the presence of sea lions can be indicative of the presence of herring. However, herring schools are absent in this image.
Two groups of sea lions can be seen some distance away from the shore in deeper water. Sea lions are herring predators, feeding on herring while they spawn. Therefore, the presence of sea lions can be indicative of the presence of herring. However, herring schools are absent in this image.
Two groups of sea lions can be seen some distance away from the shore in deeper water. Sea lions are herring predators, feeding on herring while they spawn. Therefore, the presence of sea lions can be indicative of the presence of herring. However, herring schools are absent in this image.
Two groups of sea lions can be seen some distance away from the shore in deeper water. Sea lions are herring predators, feeding on herring while they spawn. Therefore, the presence of sea lions can be indicative of the presence of herring. However, herring schools are absent in this image.
Two groups of sea lions can be seen some distance away from the shore in deeper water. Sea lions are herring predators, feeding on herring while they spawn. Therefore, the presence of sea lions can be indicative of the presence of herring. However, herring schools are absent in this image.
Two groups of sea lions can be seen some distance away from the shore in deeper water. Sea lions are herring predators, feeding on herring while they spawn. Therefore, the presence of sea lions can be indicative of the presence of herring. However, herring schools are absent in this image.
