The Ocean Sunfish -
Read detailed sightings of sunfish near you click here
  • About
  • Latest Research
  • Events
Welcome! The giant ocean sunfishes, family Molidae, are some of Earth’s most fascinating yet mysterious creatures. These jelly-eating giants hold the record for being the world’s heaviest bony fish and occupy a unique place in the open ocean web of life. This site is dedicated to consolidating our current state of knowledge and announcing our latest research discoveries and those of others as they become available. Be sure to check out the research section and if you have recently published something on mola or produced a film with mola in it please, do let us know--we’d love to add this information to the site. We are also excited to share a new feature that involves you! If you are certain you have seen a mola, please add your sighting to our growing database by clicking here.

We welcome your comments, suggestions, additions, deletions and hope you enjoy the site. Dive in!

Ecology of the Ocean Sunfish, Mola mola, in the southern California Current System Tierney M. Thys, John P. Ryan, Heidi Dewar, Christopher R. Perle, Kady Lyons, John O'Sullivan, Charles Farwell, Michael J. Howard, Kevin C.Weng, Bertha E. Lavaniegos, Gilberto Gaxiola-Castro, Luis Erasmo Miranda Bojorquez, Elliott L. Hazen, Steven J. Bograd

Giant Sunfish Washes Up What appears to be a sunfish has washed up at John Smiths Bay, with the giant sea creature found laying on the beach earlier today [Mar 29, 2014]. Later confirmed to be a Masturus lanceotus Bernews:

Want to be a marine biologist? Check out the education and careers section on the
Want to make a difference? Click here for suggestions.
Help Unravel the Mystery of the Ocean Sunfish click here
Seen an ocean sunfish? You can help Dr. Tierney Thys ( and her colleagues by reporting your sighting. Your sightings can help us understand the behaviors and movements of these amazing creatures. Any high quality pictures documenting your sighting are exceptionally helpful for species confirmation.

Sightings Latest Sighting
Date: 03/21/2015 1000 hrs
Location: N 30.372431, W 86.856583
Water Temp: 67 C
Behavior: swimming
Marks: look at video

email © 2015

About Tierney Thys

Citing this site

Adopt a Sunfish
Adopt a molaI’d like to tell you a story about a very special little girl who inspired the creation of the Adopt a Sunfish. Early in 2007, I was serving as a National Geographic expert on a ... read more