But in evolutionary terms, the poems are still a metaphor short of a mudskipper.
From the newscientist.com
An entire afternoon was set aside for filming the mudskipper sequence.
From the en.wikipedia.org
The mudskipper Periophthalmus not only takes air into its moist gill chamber, but can also breathe through its skin.
From the en.wikipedia.org
Re-equipped with air-breathing apparatus, the mudskipper emerges onto land, replaying the ancient lobefin's conquest of the land.
From the en.wikipedia.org
One particularly interesting fish is the mudskipper, a gobioid that climbs out of the water into mudflats and even climbs trees.
From the en.wikipedia.org
How about the racquet-tailed drongo, and the mudskipper, a hippopotamus-shaped fish that likes to skitter across mud flats and climb mangrove roots?
From the time.com
Amphibious fish such as the mudskipper can live and move about on land for up to several days, or live in stagnant or otherwise oxygen depleted water.
From the en.wikipedia.org
More examples
Found in tropical coastal regions of Africa and Asia; able to move on land on strong pectoral fins
Mudskippers are members of the subfamily Oxudercinae (tribe Periophthalmini), within the family Gobiidae (Gobies). They are completely amphibious fish, fish that can use their pectoral fins to walk on land. ...