López Mateos, Magdalena Bay,

A two hour trip from Loreto gets you to the Pacific coast and the whales of Magdalena Bay. Hire a panga and go see how close you can get.
The change from mountains and cacti to flat land almost devoid of cacti is impressive. The bay has higher saline and is protected and the mum whales bring their 3 month olds and stay for 2-3 months then head for Alaska.