Contradiction with Genesis 1:25
Genesis 1:21 describes God creating "great whales" and every living creature in the waters first, while Genesis 1:25 focuses on the creation of land animals, suggesting a different sequence.
Genesis 1:25: And God made the beast of the earth after his kind, and cattle after their kind, and every thing that creepeth upon the earth after his kind: and God saw that [it was] good.
Contradiction with Genesis 2:19
Genesis 1:21 narrates God creating sea creatures and birds on the fifth day, whereas Genesis 2:19 implies all creatures were formed from the ground, which could suggest a different order and method.
Genesis 2:19: And out of the ground the LORD God formed every beast of the field, and every fowl of the air; and brought [them] unto Adam to see what he would call them: and whatsoever Adam called every living creature, that [was] the name thereof. [Adam: or, the man]
Paradox #1
Genesis 1:21 describes God creating sea creatures and birds. A contradiction or inconsistency could be related to the order of creation events. Some people see a conflict between this account and scientific understanding of evolution and fossil records, which suggest that sea creatures appeared before birds over millions of years. The verse describes both being created simultaneously, which can be seen as inconsistent with scientific timelines.
Paradox #2
The scientific conflict involves the creation order where sea creatures and birds are described as being created simultaneously. In evolutionary biology, birds evolved from land-dwelling dinosaurs millions of years after the first sea creatures, not at the same time.