If a single system composed of several interacting, basic parts were to stop functioning at the removal of any of the parts... then we have irreducible complexity.

What need or mechanism could cause such a single-tracked, multi-staged, purposed process as demonstrated in the life and travels of the monarch butterfly?

We continue looking at the transformation of the Monarch butterfly from egg to caterpillar to chrysalis to butterfly.

When looking at creatures whose design, habits and/or migrations point to a careful and wise Creator, we should not leave out the Monarch Butterfly.

Let's take a look at the anatomy of the whale in reference to the idea that whales descended from land animals

Whales have lung tissues that can tolerate levels of compression that would rip ours apart, perfect for their high pressure habitat.

Underwater creatures must have special mechanisms for dealing with the extreme pressures of living so far beneath the surface of the ocean.

Another example of irreducible complexity is the woodpecker, who's hammering (a force of over 1000 Gs) involves several essential components.

The complex apparatus of the Bombardier Beetle is a perfect example of irreducible complexity.

The Bombardier Beetle utilizes chemicals typically metabolized by its species in remarkable, irreducible ways.