Last year I had the opportunity to go to the Whale Watching Center in Depoe Bay along the sea wall. Basically the little building is all about whales - from how the native Americans used and hunted the whales to the whale trade and subsequent ban on hunting.
It's a very rewarding, educational and fun spot to stop at the Oregon Coast - and it's very easy to get to, right in downtown along Highway 101.
The best part of the visit is using the binoculars to try and spot whales making their migration. I forget whether it's north or south, but they are migrating somewhere. They will be on their trips from March through the month of April - so if you are visiting Oregon, make a trip out to the coast!
Park rangers will be on hand to help you spot the big mammals.
Pat