Horseshoe crabs

Possibly one of the weirdest animals on the planet. This video of the horseshoe crab shows how they come to the same area to mate and at the same time red knot shore birds are en route to the Arctic and stop to fatten up on the horseshoe crabs eggs for their flight north where they breed.

A great example of natures interdependency and how, if we threaten one species, it can have a huge effect on another or even others.

Via the kid should see this.