Skip to content

Today's Creation Moment

Oct
31
Delicate, Precise Designs
Matthew 6:28
"And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin:"
When a flower lives in harmony with and is dependent upon, say, an insect for fertilization, this is known as symbiosis. Creation Moments programs have given many examples of this, and each one...
RSS
share

The Best Swimming Wing

Genesis 1:21a
"And God created great whales, and every living creature that moveth, which the waters brought forth abundantly, after their kind..."

An unusual example of a design in nature that runs counter to human common sense is found in the pectoral flippers of the humpback whale. The leading edge of these flippers, which one would intuitively expect to be smooth, actually sport evenly spaced bumps.

After all, airplanes, as well as birds, have sleek leading edges on their wings. These smooth edges would seem to be the most efficient at cutting through the air, which is a fluid, just like water. Puzzled about this, scientists recently made two models of the humpback's pectoral fins. One had a smooth edge, the other had the bumps that appear on real fins. These models were taken for testing in a wind tunnel. Not surprisingly, the smooth-edged fins performed like a standard wing. However, the humpback model did much better! It generated 8 percent more lift and a third less drag than the standard design. What's more, the bumpy wing could angle 40 percent more steeply into the air than the sleek model before it stalled. Since water, like air, is a fluid, these principles would apply to a real humpback fin, enabling humpbacks to be more nimble in the water.

This unusual design comes in handy for the humpback because they feed on fast-moving schools of nimble herring and sardines. Obviously, God gave them a special design to help them do this.

Prayer: 
Father, I thank You that Your thoughts are not our thoughts. Help me to think more like You. Amen.
Notes: 
Scientific American, 8-2004, pp. 18-19, "Bumpy Flying."