This is the pier at Newport Oregon, and those aren't rocks. What looks like a massive pile of grubs is really a massive pile of Sea Lions all of them barking and oorking like they're on the floor of a stock exchange.
We heard them Friday morning from our hotel on the beach. Even though the surf at Newport is very loud we could still hear them in the distance, miles away, and over a hill.
After we found them all congregated on a pier in the bay (just outside the Shellfish Reserve), we found breakfast along Bay Blvd at The Coffee House (yes, that's the name) and our kids each had a pancake so large it spilled off the plate.