I had not been out on a whale boat recently. A new business took over another whale watching business and i knew some of the crew. So i got on a boat at 5:30am for a seven hour whale watch. We were hoping for a great sunrise but fog got in the way. Happens in our summer months. But nice trip and we saw these risso's dolphins and sea lions feeding or racing together.
Risso's are one of my favorite dolphins. They are big. They are about 12 1/2 feet in length and can weigh between 650 and 1100 pounds.
The Risso's dolphin lacks teeth in the upper jaw and has no more than seven pairs of conical teeth in the lower jaw.
Risso's dolphins have prominent dorsal fins, sometimes prompting observers at a distance to think they're orcas or white sharks instead.
A Risso's dolphin named Pelorus Jack became famous for guiding boats across Cook's Strait in New Zealand and sparked the first government protection for a cetacean after someone fired a rifle at the curious dolphin in 1904.
This species has been known to hybridize with bottlenose dolphins in captivity and on occasion in the wild.
Risso's are common in Monterey Bay. I see them sometimes with just two or three and sometimes in huge super pods of hundred or more. I love all the scarring on their bodies. These are caused by bites from other risso's or from the squids that they love to eat.
More facts at :https://www.montereybayaquarium.org/animal-guide/marine-mammals/risso-dolphin