Dolphin “hands”—the homology argument

“The pectoral fins or flippers of the dolphin contain bones that appear similar [homologous] to those of the human arm and hand (as well as the forelimbs of other mammals).  The pectoral fin of the dolphin, for example, contains a short bone similar to the humerus (upper arm bone) of land dwelling mammals which is attached by a ball socket type joint to a scapula (shoulder blade).”  Also, the fin contains small bones which appear similar to wrist and finger bones in human hands and limbs of other animals. You usually see human hands, fins, and bat wings pictured together in textbooks, National Geographic, etc. Those who believe all animals evolved from lower life forms say this suggests a common ancestor. “But there are significant differences in both structure and function between the fin bones of dolphins and the limb bones of terrestrial mammals. Dolphins do not actually swim with their pectoral fins…but mostly use them to steer.”  Also consider that, “Dolphins do not have a movable elbow joint and hold their pectoral fins rather rigidly out from the body.  Their only mobile joint is at the shoulder…[which] is unsuitable for walking or grasping. The homology argument does not support evolution, but rather a common designer. For example, the rudimentary male mammary gland and nipple are clearly homologous to those of the female, but they are not taken as evidence that males once nursed their young.” Common design is the product of an intelligent designer. If a design system (such as hand/fin structure) works well, then it would be logical for the Designer to use it again. The Bible tells us the identity of that Designer—God. 

“Dolphin found with ‘remains of legs’”AIG Ken Ham and David Menton Nov. 5, 2006

http://www.answersingenesis.org/docs2006/1105dolphin-legs.asp