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Creation  Volume 15Issue 1 Cover

Creation 15(1):24–25
December 1992

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By Design
by Dr Jonathan Sarfati

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Editor’s note: As Creation magazine has been continuously published since 1978, we are publishing some of the articles from the archives for historical interest, such as this. For teaching and sharing purposes, readers are advised to supplement these historic articles with more up-to-date ones suggested in the Related Articles and Further Reading below.

Sea slugs leave Darwin’s theory slipping

by Geoff Chapman


There are many strange creatures living in the sea, but few stranger than the Nudibranch Sea Slug. And there are few whose design is more damaging to the theory of evolution.

Sea slugs mainly eat sea anemones, which are covered with stinging cells that normally burst at the slightest touch, firing poison darts at the creature which touched them. The sea slug, however, is able to tear sea anemones apart and swallow the stinging cells without bursting them!, Nick Hobgood Nudibranch
Nudibranchs (Nembrotha kubaryana) eating clavelina tunicatecolonies.

Even more amazing is what happens to the stinging cells when they reach the sea slug’s stomach. There are tiny tubes lined with moving cilia (hairs), which link the stomach to waving spurs on the sea slug’s back. The sea anemone’s stinging cells—so fatal to other organisms—are transported from the stomach, up those tiny tubes, to the tips of the spurs. There the sea slug stores those stolen weapons to use in its own defence, shooting them at any fish which dares to attack it!

The sea slug stores the weapons it stole from the sea anemone to use in its own defence.

Is it possible to imagine an evolutionary scenario for the development of the sea slug’s amazing mechanisms? Let us suppose that at some time in the past, a sea slug happened to attack and tear up a sea anemone without getting a lethal dose of poisoned darts. Let us further suppose—against all the odds—that it was somehow able to swallow the stinging cells without bursting them.

Photos: Gary Bell colourful-seaslugs
Spectacular variety is shown in these colourful sea slugs. The complexity of the sea slug leaves Darwin's theory in ruins.

Without those special tubes, and moving hairs, to transport the stinging cells to the spurs on its back, the sea slug would have been doomed. Every part of the sea slug’s complex mechanism had to be complete, right from the beginning, to ensure its survival. Millions of years would make no difference, because if the sea slug’s protective mechanisms were not perfectly operating in its first attack on the sea anemone, it would have died.

Every part of the sea slug’s complex protective mechanism had to be complete, right from the beginning.

In his Origin of Species, Charles Darwin wrote: ‘If it could be demonstrated that any complex organ existed which could not have been formed by successive, slight modifications, my theory would absolutely break down.’

The sea slug leaves Darwin’s theory in ruins. The only logical explanation for the origin of this amazing creature is special creation!

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Readers’ comments
Tina G., South Africa, 31 July 2014

How great is our God!!!

Michael I., United States, 30 July 2014

Mr. Darwin, your theory broke down... OVER AND OVER AND OVER AGAIN!!! I love it. God Bless CMI.

R. H., New Zealand, 30 July 2014

This is one of my favorite Example of God's creation, Sure he never wanted the sea slugs to kill the anemones but he knew that giving man domain over all creation, and of the fact that we were going to sin, that he could design any and every animal with a way to protect itself. It makes me sad that we live and dragged animals into the decay and temporary bondage of Sin.

I Love the colours and the shapes. Thank God for his Majestic Creation.

David Catchpoole responds
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