Tag Archives: Golden Gate Cetacean Research

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Karen Wilkinson spotted Bottlenose Dolphins several weeks ago. She enjoyed watching them surf the waves.

Bill Keener of Golden Gate Cetacean Research took a look at Karen's photos. Bill wrote, “This was a tough bunch because most of the dolphins were unknown to me. I am sending them on to other researchers in Monterey Bay to see if they know them. However, the first dolphin was easily recognizable as Sakura, a female. You have seen Sakura before on August 19, 2018 at Sea Ranch. She was with Bliss in that group, but Bliss did not appear in the group from February 1.”

Below is a photo Karen took of Sakura in 2018 with her newborn calf just to her right.

Bottlenose Dolphins are identified by the notches in their dorsal fins. They have extended their territory northward and we are seeing more them off our coast. As Karen knows, they are so much fun to watch. And it’s interesting that Sakura was seen in a different pod. There is a lot to learn about them in the days ahead.

Thanks to Karen for allowing me to share her photos with you here.

Back to incredible balmy weather today. News flash! A few Gray Whale mother/calf pairs have swum by our shores in the past few days, very early this year. Hundreds of adult Grays swam by this past week headed back to their feeding grounds in the Arctic.

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It's exciting to see Bottlenose Dolphins off the Mendonoma coast! They have been expanding their territory northward over the past few years. Karen Wilkinson found a pod of these dolphins quite close in at Smuggler's Cove off The Sea Ranch in mid-August. She took many,  many photos, which were shared with Bill Keener of Golden Gate Cetacean Research.

Bill wrote, “I was positively able to ID three individuals. First, I was able to confirm that the female we call Sakura has a new calf. She had calves before in Monterey Bay, then about five years ago she had a calf off San Francisco, and now this is her new calf.

“You can tell that the calf is about a month old because of the vertical pale stripes on its body – those are called ‘fetal folds’ which are stretch marks due to the curled-up position the calf had while in the uterus.” Bill said the marks last a couple of months before they fade away.

Bill was pleased to see Karen had photographed Bliss, an older female. Bill wrote, “Bliss is one of the oldest dolphins in [our records.] She was first seen in San Diego in 1982! She is likely in her mid-40s or 50 years old now. Glad she is still going strong!”

The other Bottlenose Dolphin Bill was able to ID was a male named Shiloh. Neither Sakura or Shiloh had been spotted further north than Bodega Bay until now. They were seen years ago in Monterey Bay, but the past six or seven years they have been seen in the San Francisco Bay Area.

Karen also photographed an unknown adult Bottlenose Dolphin and she has a calf with her, which you can see in the photo above. Bill wrote, “As for the unidentified dolphin, now begins a longer process of trying to figure out if it has been seen before in another part of California. It’s fairly uncommon for us to see a totally brand-new adult animal before. But it can happen.”

Here are a few more photos Karen took that day.

And here is a map Karen drew of her sighting at Smuggler's Cove.

Thanks to Karen for allowing me to share her photos with you here.

We are having an oh-so-lovely day this Sunday. It would be a good day to spot...bottlenose dolphins!

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Craig Tooley was out at Black Point Beach at The Sea Ranch when he noticed dolphins, Bottlenose dolphins!

Bottlenose dolphins by Craig Tooley

A bottlenose dolphin by Craig Tooley

I sent Craig’s photos to Bill Keener of Golden Gate Cetacean Research. He wrote, “Wow, these are great shots, and I can immediately recognize the individual dolphins here! In the background is Allure, in the middle is Bliss, a female who had a calf two years ago, and in the foreground is Fletcher.
“They have all been sighted fairly recently in the SF Bay Area. This is valuable information. We are working on a scientific paper with all the dolphin researchers in California describing how the coastal bottlenose stock is expanding its range north. Craig’s photos are one more set of data that prove it.”

It is the dorsal fin that allows scientists like Bill to identify individual animals. It’s exciting to be able to contribute to Bill’s research through our citizen science, and with the talent of a great photographer like Craig.

Thanks to Craig for allowing me to share his photos with you here. To see much more of Craig's nature photography, here is his website: www.ruffimage.com

To learn more about the Golden Gate Cetacean Research organization, here is their website: http://www.ggcetacean.org/