Cabrera Sea Bottom . Balearic Islands. 1
Planet Doc Full Documentaries
Wild Alaska salmon face each year the most difficult time of their lives.
Every year, something special happens in Alaska in late June. wildSalmon swim from the ocean to the river to spawn. The transition from saltwater to freshwater produces morphological changes in them, their gonads get bigger so that prevent them eat.
When they reach the river they encounter their worst enemies, the Grizzly Bears. These bears are the largest in the world and all because they feed on these salmon. Not all fall into the strong claws of the bears, The most skilled salmon escape and continue upstream. These will be those that reproduce.
When they reach the end they shed their sperm over the roe that the females have put in the nest and the cycle begins again.
Thimbnail: Ray morris1