Pacific Lamprey that spawn in Idaho and Oregon rivers, migrate 900 kilometers to 1,100 kilometers (559 to 683 miles) from the ocean, which are among the longest distances traveled by any lamprey species in freshwater.
Pacific Lamprey that spawn in Idaho and Oregon rivers, migrate 900 kilometers to 1,100 kilometers (559 to 683 miles) from the ocean, which are among the longest distances traveled by any lamprey species in freshwater.