Charismatic. Bizarre. Adorable. How to describe the ocean sunfish? How about mysterious, since there’s still so much to learn about this peculiar fish! Let’s check in with our researchers to see how they study the magnificent mola mola in the wild!
Happy Mola mola Monday! Our colleagues at the Monterey Bay Aquarium Research Institute (MBARI) spotted this school of sunfish during a dive—and it made us realize there’s no collective noun specifically for molas!
What do you think it should be? Here are some options:
Mola mola munch munch! Target feeding with our two young ocean sunfish is a piece of cake. Both beasties have learned to hit their Mola marks to dine on tong-delivered delicacies!
Even though ocean sunfish have a brain the size of a walnut, they can be trained to recognize a visual dinner-bell (a “target” in the biz) to come over and be fed by hand.
The molas are fed a special blend of food inside a sausage casing, allowing us to study how fast these animals grow. Our daily tailgates with the molas prove that you can be bean-brained brainiac!
By tagging wild ocean sunfish and the Mola mola we release back into the ocean after their stay at the Aquarium, Senior Aquarist Michael Howard is helping advance our understanding of this captivating and poorly understood fish. Check out the video of a day in the life of a sunfish researcher!
Love the ocean sunfish, or mola mola? Some people think it looks like a fish designed by a committee, with a broad body and abbreviated tail section. Molas hatch from tiny eggs but grow to weigh more than a pickup truck. You can see one in our Open Sea exhibit!
New Mola in Town!
There’s a new ocean sunfish on exhibit in the Open Sea.
Our Husbandry team added the sunfish (Mola mola) over the weekend and it’s acclimated very quickly. It’s swimming well and makes a beeline to the surface to feed when our staff puts a colored target in the water as a signal that it’s mealtime.
We collected the sunfish in Monterey Bay on September 11, when it was just over 2 feet long and weighed nearly 32 pounds. On October 25, when it went on exhibit, it was 2 ½ feet long and weighed 46 pounds – quite a growth spurt!
Then again, the Mola mola – its Latin name, which means “millstone” – DOES tend to get big. It’s the largest bony fish on Earth, with some individuals topping out at 5,000 pounds. One sunfish we exhibited grew to weigh nearly 900 pounds before we returned it to the wild, with the help of a helicopter.
We’ve temporarily moved our two green sea turtles behind the scenes to help the sunfish adjust to its new surroundings. Before it gets too large, we’ll fit the sunfish with a tracking tag and release it in Monterey Bay. Based on results from other sunfish we’ve released, it will do well and travel far.
Learn more about the Mola mola.
Check in on the new ocean sunfish on our live Open Sea cam.
(© Monterey Bay Aquarium/Randy Wilder)
No one told this ocean sunfish about falling back for daylight saving time on Sunday—it shines brightly all day long! ☀️
Take a look at our web cam to marvel at the majesty of the newest fin-tastic addition to our fishy family! The Mola mola joined us about a month ago and is growing fast—once it outgrows its home here, it’ll be released back out into the wild.
There are people around the globe doing important work to achieve the goal of protecting our planet. This Earth Week, check out the work that the Aquarium’s Conservation and Science team is doing to tackle large issues like plastic pollution on both the national and global scale. Check out our earth week page to learn more. Remember, we’re all in this together. 💙