The bizarre creatures are colloquially known as "Elvis worms" due to their shiny scales being reminiscent of the King of Rock's famous sequinned suits.
Bacteria that consume methane were found to burrow into the worms' skin, allowing them to get nutrients from the greenhouse gas.
Ballgames played an important role in the civilizations of ancient Central America.
Footage was shot by a tourism guide near La Fortuna, Costa Rica.
"Limiting the temperature increase during the 21st century will help to avoid it," an expert told Newsweek.
The American tourists and their Costa Rican guide were killed when their rafts flipped over on the Naranjo River.
Costa Rica will join numerous other Latin American nations and countries around the world that legalized same-sex unions.
Laguna Caliente in Costa Rica is one of the harshest environments on Earth for life.
"It will be a responsibility not only to represent people of African descent but to represent all women and men in the country," Campbell Barr said.
Voters took to the polls in Costa Rica on Sunday as a same-sex marriage debate rocked the predominantly Catholic state's presidential election.
A New York couple and their three sons were aboard a small plane when it crashed into the side of a mountain.
One of Central America's most stable countries and home to breathtaking tourist destinations and the world's happiest people, Costa Rica is now having an increasing role in the global drug trade.
The country's president has issued an appeal for calm.
Five Costa Ricans and two Cubans were arrested over the course of ten raids.
Firefighters that protect the national park lands of Costa Rica have invested in drone technology to help survive this year's fire season.