National Wildlife Federation的动态

Just keep swimming ???? There are 7 species of Pacific salmon globally and just 1 species of Atlantic salmon. While Pacific and Atlantic salmon are distantly related, they have many chromosomal differences and cannot interbreed. The oldest salmon record in North America comes from sabertooth salmon fossils that date up to 7 million years ago. These prehistoric fish could grow up to 3 meters long! Salmon are typically anadromous, meaning they live in both fresh and saltwater over the course of their lives. They are born in freshwater, journey to the ocean, and then return to freshwater streams to spawn. #wildlife #alphabet #salmon #nature #funfacts

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