Band 8+: The graph below shows the population figures of different types of turtles in India between 1980 and 2012. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The graph illustrates the population dynamics of various turtle species in India from 1980 to 2012.

Overall, the data reveals a significant fluctuation in populations among different species, with notable increases and decreases over the observed period.

Initially, the Leatherback Turtles exhibited a gradual increase in their population from approximately 100 individuals in 1980, peaking at around 120 in 1986, before experiencing a marked decline that left only about 60 individuals remaining by 2012. In contrast, the Green Turtle population remained relatively stable, fluctuating between 90 to 100 turtles throughout the entire period, indicating a lack of significant variation in their numbers over time.

Conversely, the Olive Ridley Turtles demonstrated a pronounced upward trend; starting with a population of about 100 in 1980, they increased to approximately 120 by 2012, marking them as the only species to exhibit consistent growth. The overall population of all turtle species combined experienced fluctuations as well, peaking around 1990 but subsequently declining to approximately 80 individuals by 2012, indicating a reduction in diversity over the decades.