Evolutionists proposed that a fish, that evolved to stand on two feet went back living in the sea.

Image courtesy of Alex Boersma-

Joel Kontinen 

A fish that lived 385 million years ago descended from four-legged land animals, according to Darwinists in a clear example of a “backward” step in evolution.

According to evolutionists, “some fish grew legs and developed the ability to stand nearly 400 million years ago, starting the evolutionary lineage of four-legged animals called tetrapods. But the smooth limb bones of the newly described Qikiqtania wakei fossil couldn’t have supported the muscles needed for standing, meaning the “fishapod” had evolved back into a swimming, full-time water dweller, says Neil Shubin at the University of Chicago.”

Evolutionists think that the fish called  Qikiqtania is clearly a close relative of Tiktaalik

Source;

 Lesté-Lasserre,  Christa, 2022.  A fish that evolved to stand up on land went back to living in water New Scientist 20 July