Band 7+: The diagrams show the life cycle of a species of large fish called the salmon. Summarize the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words. You should spend about 20 minutes on this task. To zoom in, click on the image.

The given picture demonstrates the life cycle of salmon species, depicting various stages from spawning to maturity.

Overall, there are four main stages in the growing process, which involves spawning in the upper river, growth in the lower river, maturation in the open sea, and return to the upper river for spawning, completing the cycle.

The salmon life cycle starts with spawning in the upper river, where eggs laid in slow moving water. These eggs then hatch into small stones around the reeds’ trunk and stay in this place for almost 5-6 months. Following this, the juvenile salmon migrate downstream, attracted by the fast-flowing water. This stage lasts for 4 years, which makes fry increase in size and sets the foundation for their development in the next stage. Subsequently, the smolt embark on their migration to the open sea, a critical phase where they spend approximately 5 years. During this period, they grow up to their full size, about 70-76cm. Besides, they adapt to the vast expanse of the sea environment, honing their instincts and physical capabilities. Ultimately, the life cycle of the salmon culminates with the adult fish returning to the upper river for spawning purposes, thus completing the natural life cycle.