How about a break from politics for some cool science?

[QED]

Bio-luminescent fish defending itself:

Link to tweet

[petronius]

1. Very cool! Although I think the bioluminescent defense is

actually by the ostracod that the fish just tried to eat. Here's a slower version; the plankton generates the glow, and the fish vomits it out to avoid becoming visible:

[QED]

2. That sounds more like it.

Thanks for the clarification.

Jim Lovell said the bio-luminescent algae helped him find his way home when his instrument panel went dark one night:

The Perilous Voyage of Apollo 13 by Jim Lovell and Jeffrey Kluger relates the story how as a carrier-based pilot facing instrument failure, Lovell relied on the luminescent wake of the aircraft carrier to locate the ship. ” Down below him… he noticed a faint greenish glow forming a shimmery trail in the black water…. He was certain he knew what the strange radiance was: a cloud of phosphorescent algae churned into luminosity by the screws of a cruising carrier. Pilots knew that a spinning propeller could light up organisms in the water, and this could help them locate a missing ship.”

https://scripps.ucsd.edu/labs/mlatz/bioluminescence/popular-accounts-of-bioluminescence/

[cyclonefence]

3. Holy shit

what wonders

thanks to you and op