Goldstream - Vocabulary Practice

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
At Goldstream, the most common of salmon you see is the chum salmon. There are also some coho and chinook salmon in the river.

Every year, salmon from the ocean to the stream where they were born to . Scientists have discovered that salmon partly by following the stars. The salmon must work hard to swim upstream against the current so when they finally arrive at the end of their journey, they are completely . At this time, they are also eaten by , such as bears, that come to the river when it is full of salmon.

Beginning when the salmon enter the , their bodies begin to change. The colour of the fish changes. In addition, their skin is often cut and scraped on the rocks as they swim against the and they can get from bacteria in the water. The male in particular looks very different at the time of spawning. The male’s changes shape; it becomes hooked and the teeth become larger, in order to fight for a female to with. The males often each other seriously during these fights.

The female digs a hole in the to lay her . The male then comes next to her to the eggs. The female may with two or more different males. Finally, the female covers up the eggsby waving the large on her tail, and eventually, the female and male salmon die. They have left eggs in the stream for the next generation of salmon.

The many dead salmon provide food for such as seagulls, crows and racoons. Even the bones provide important for plants and tiny animals in the river as they .

The eggs three or four months later. The baby salmon, or alevins, live in the , which protects them from and supplies oxygen until they become young fish called fry, at which time they come up out of the to look for food. In the spring these young salmon to the ocean, where they live for two or three years, before returning once again to the rivers and streams where they were born. This is the life cycle of the salmon.