Sentences with phrase «river spawning grounds»

This month American shad conclude their long journey from oceans to river spawning grounds.

Not exact matches

Early declines, dating as far back as the 1700s, were probably the result of overharvesting in the rivers, dam construction blocking access to spawning grounds, and water pollution.

River herring include two related species, alewife and blueback herring, which migrate between freshwater spawning grounds and the ocean, where they spend most of their lives.

The Campbell River has crystal clear water that provides a unique opportunity to snorkel with thousands of salmon as they swim up - river in search of their spawning groRiver has crystal clear water that provides a unique opportunity to snorkel with thousands of salmon as they swim up - river in search of their spawning groriver in search of their spawning grounds.

Home to five different species of salmon, the river is most prolific in summer when thousands of salmon complete a four year quest, returning from the ocean to swim upstream against the current, returning to their spawning grounds.

Every year salmon swim up the Snake river, struggling over 900 miles and up 7,000 vertical feet to their spawning grounds — the highest in the world and among the most important in North America.