Thanks for the replies.
Dumb question: How does one send bitcoins from Blockchain to Coinbase?
In your dashboard on blockchain.info, there is a button "Send". In your coinbase account on the "Accounts" tab, there is a "Bitcoin wallet" row with a button "Receive". Once pressed, you'll see an address which you should use on blockchain.info as a value for "To" input in the window opened after your press "Send" button I mentioned before.
Hope it's clear.