Creating the tail and dorsal fins using the Extrude tool

With the symmetrical elements out of the way we can now focus on the fins that…run right down the center of the shark.…So, the dorsal fin, which is the fin that goes across to his back and it's the…most recognizable of all the shark fins, is going to come right about of this…region of the shark.…But making an element in the center line of the shark is really difficult with…the Symmetry object in place.…So, we need to make the Symmetry object of one whole shark again.…So, that's a drastic change.…So, let's take the Symmetry object and Ctrl+Drag a copy of it down into the hider.…Then we are going to come back to the original symmetry.…

With the Symmetry object selected I am going to hit the Make Object Editable button.…I can also hit the letter C on the keyboard.…If I click on that, now I get a cube that has all the points on both sides of the axis.…Now, it's going to be really easy to make that dorsal fin.…So, let's go back to the side view and make sure that I have the right polygon selected.…