If the number of hawksbill turtles is twice more than the number of green turtles, then there are 2*800 = <<2*800=1600>>1600 more hawksbill turtles.
The total number of hawksbill turtles is 800+1600 = <<800+1600=2400>>2400
The total number of turtles that have been taken into the conservation center is 2400+800 = <<2400+800=3200>>3200 turtles.
#### 3200