Francium is a radioactive chemical element which is classified among the alkaline earth metals on the periodic table. It is extremely unstable, with a very short half life â approximately 20 minutes â and, as a result, it has few applications outside the realm of scientific research. The bulk of the world's francium is synthesized in labs; it only appears in nature in very small trace amounts, and it is an extremely rare element.
Massive marlin caught off Hawaii coast. A fisherman from Hawaii reeled in giant blue marlin weighing in at 1,368 pounds. CNN affiliate KITV reports.
Courtesy IGFA. A list of the biggest marlin ever caught. While there have been bigger marlin landed commercially and by recreational anglers not in accordance with IGFA rules, pictured in the following gallery are the leading big fish, officially speaking.