Octopuses are extraordinary creatures, and their blue blood is just one of the many unusual aspects of their biology. Did you know that an octopus has blue blood [Jsim] The ocean covers more than 70% ...

Octopuses are extraordinary creatures, and their blue blood is just one of the many unusual aspects of their biology. That means there's a huge part of the ocean, over 95% that are yet to be explored.

The octopus is one of the coolest animals in the sea. For starters, they are invertebrates. That means they don’t have backbones like humans, lions, turtles, and birds. That may sound unusual, but ...