Call for entries: Underwater Tour Awards 2021

Australia, 11 January 2021: Entries are now open for the Underwater Tour Awards 2021. We have added two new awards this year to include not just photographers, but also creatives and eco-citizens everywhere.

Guru Awards These awards feature five Categories, a publicly-voted People’s Choice prize, plus the ultimate prize for the top-scoring photographer across all the categories, the Grand Guru prize!

Image of jellyfish captured in glass filming vessel. The footage below shows a jellyfish swimming through a laser sheet with tracer particles.
Image of jellyfish captured in glass filming vessel. The footage below shows a jellyfish swimming through a laser sheet with tracer particles.

Jellyfish creates virtual floor to swim efficiently

Researchers have known that an animal swimming parallel to a solid surface receive a subsequent boost in performance, thus allowing them to utilise less energy when moving around. 

 

Studies have quantified this into a 25 percent increase in speed and a 45 percent increase in thrust when swimming near a solid surface. 



However, the jellyfish does not swim near the seafloor or seawalls. How does it get named the "world's most efficient swimmer"?

Apparently, it does so by creating a "virtual wall."