Quick Take Reaching a size 5 times larger than males is a biological benchmark for breeding females. Holding breath for 10 minutes underwater dictates the specific aquatic reach of the green anaconda.

For a long time, the idea of giant animals has mostly been tied to dinosaurs on land. Oceans feel different, quieter, even ...

Carlos Jaramillo (top row, third from the right), a staff scientist at the Smithsonian Tropical Research Institute, co-organized the team that discovered the largest snake in world history. Courtesy ...