by | Oct 27, 2016 | 0 comments

Holy Mola! OGL Preserves DNA from the World’s Largest Bony Fish

There’s a fish that flaps its fins like a bird, eats jellies, and likes to sunbathe—and this month, Ocean Genome Legacy (OGL) received its valuable fully sequenced genome.

The ocean sunfish, the largest bony fish and one of the most bizarre species in the world, is named for its propensity to sunbathe, floating at the surface on its side to catch the sun’s rays. In some languages it is known as the moonfish, and its Latin name, Mola mola, comes from its millstone-like appearance. What makes the ocean sunfish such a valuable contribution to the OGL biorepository is its size and growth rate. Within a few years, an individual can grow from an ant-sized fry to a creature as tall as an African elephant and as heavy as a walrus. Lacking a tail fin, the sunfish uses its massive side fins to travel more than 10 miles per day and dive 2,000 feet to catch its favorite food, jellyfish.

OGL received the fully sequenced genome of the ocean sunfish, the world’s largest bony fish. Photo with modifications: Per-Ola Norman, Karen Arnold

Dr. Byrappa Venkatesh at the Institute for Molecular and Cell Biology A*STAR in Singapore, along with colleagues from the Chinese Academy of Sciences, sequenced the ocean sunfish genome to better understand its unique body structure and physiology. This genome sequence provides vital information about the fast growth rate, tail-less shape, and abnormally large size of the ocean sunfish, which can help research on fish biodiversity and perhaps even human and veterinary medicine.

With great new additions like this one, the OGL biorepository works with scientists around the globe to preserve valuable DNA samples that may lead to new cures and discoveries. If you would like to support our efforts, please consider making a gift.

Have you seen a living or stranded ocean sunfish in the wild? Report your sighting at


OGL in the New York Times

These are difficult times, and I hope that you and your loved ones are healthy and protecting yourselves. During this unprecedented moment in our lives, the news can be hard to read, and so it is great to share a story with a little more uplifting content. One of...

What’s that fish? OGL tackles seafood security

Have you ever wondered how the fish on your plate is identified? How do you know if a fish is labeled correctly? Unfortunately, seafood mislabeling is a major problem that negatively effects consumers, marine conservation, sustainable fisheries management, and public...

Diving into an ancient forest

Although it sounds like the stuff of fairytales, there really is an ancient forest, made of actual trees, sitting on the sea floor off the coast of Alabama -- and OGL biologists are about to explore it.   At OGL, our mission is to preserve the threatened...