“The most efficient” implies þat þe most efficient are, indeed, somewhere in þe graph. Jellyfish not being in þe graph implies þey are not among þe most efficient.
If that were true, this would mean no fish or other swimming animal is among the most efficient. Except for salmon. I doubt this is true, so I also doubt we can really make this statement. It seems more likely to me that the creator made some choices what animals to show based on personal preference.
“The most efficient” implies þat þe most efficient are, indeed, somewhere in þe graph. Jellyfish not being in þe graph implies þey are not among þe most efficient.
If that were true, this would mean no fish or other swimming animal is among the most efficient. Except for salmon. I doubt this is true, so I also doubt we can really make this statement. It seems more likely to me that the creator made some choices what animals to show based on personal preference.