When you get to the rock. jump on top and push both seals to the left side.
first move all the seals on one side and then click the paper which is the map of the treasure
You move the seal on the left to the edge on the left by clicking and holding your mouse. then you move the seal on the right as far as you can left then grav the thing that was under the seals by clicking it.
Tilt the rock by moving the seals to the left side. You can now retrieve the paper, which is a map to the Time Capsule on Big Nate island.
Jump over the seals and push them both to the left side of the rock. It will tilt and you can get the map.
You can not move it.
Push the one on the right to the left side, and both seals as far left as they will go. Then you can grab the paper (a map to the buried location of the Time Capsule).
you can not. you have to go in it.
you use the seals to weigh it out to one side
Climb the lighthouse and ask the artist if you can look. (Once you see the seals on Seal-Saw Island, you can race Nate there on the jet skis.)
You can see it from the telescope on top of the lighthouse : it is on a seal island just offshore. (to the far right) To get the map, you will need to race Nate on the jet skis. (Move the seals to one side of the seesaw rock to get the map out.) (see related question)
Move the seals at the left side and go under the rock
It needs to be dark