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When you’re a duck and have places to be, but safety is key

owo what’s this?!

Mood Instagram: @artwoonz

HE HUNGERS FOR THE SKY RAISINS

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feets

The obstacle sheds a wake of alternating vortices into the flow, and when the fish is properly positioned in that wake, the vortices themselves flex the fish’s body such that its head and its tail point in different directions. Under just the right conditions, there’s actually a resonance between the vortices and the fish’s body that generates enough thrust to overcome the fish’s drag. This means the fish can actually swim upstream without expending any energy of its own! The researchers came across this entirely by accident, and one of the questions that remains is how the trout is able to sense its surroundings well enough to intentionally take advantage of the effect. (Image and research credit: D. Beal et al.; via PhysicsBuzz; submitted by Kam-Yung Soh)

Heat index was 110 degrees so we offered him a cold drink. He went for a full body soak instead