Around our reefs, you'll find a rainbow of tropical fish, eels, possibly the highest density of puffer fish in the world (I challenge you prove us wrong!) (montezumasurfschool.com)
Tropical favorites like puffer fish, eels, stingrays and dolphins swim these waters, and many people say that Coco Beach is home to some of the best diving in Costa Rica. (1costaricalink.com)
Others are natural toxins that have long entranced weaponeers but are hard to disperse: tetrodotoxin from puffer fish, for example, and botulinum toxin, one of the most poisonous known compounds. (sciencemag.org)