This depends in part on what turtle you're asking about. Then an estimate of the current populations figures, and the rate of lose might give you a probable time frame, if all the conditions remained the same through out the time period.
It's not about time. A species is extinct as soon as there are no creatures of it left alive (or, there could be a few, but they could be all male and can't reproduce or something like that <- HYPOTHETICAL)
how many years till dolphins are extinct
Actually, the Siberian's numbers are on the rise, to nearly 600.
Sharks became extinct during the epic battle of the sea to decide which of the two mammals TRUELY ruled the seas between the sharks and the dolphins. The sharks were no match for the dolphin's almighty power which caused the sharks to all die off as the dolphin leader conquered all the sharks till they became extinct.
19 years.
33 years
100 years
12
0 years its in 38 days
38 Years
988
23
19 years.
In 2018, it is 568 years.