"To succeed in life, you need three things: a wishbone, a backbone and a funny bone." - Reba McEntire

Supplementary videos

Chordates: The Notochord and Vertebrate Movement
Giant Pyrosome and Salps: sea squirts are chordates without vertebrae
Mudskipper can walk on land and breathe air
Raising walking fish on land
Platypus Hunts with "Sixth Sense" - electrolocation

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