Scaly Foot Snail

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Warmup
100 your choice

Set 1
5x through:
50 easy @ :20 rest
50 fast @ :20 rest
(500)

Set 2
100 kick w/ board
Your legs may be tired after the fast 50s, really focus on keeping your hips (butt) at the surface of the water and trying to make the water “boil”

Set 3
2x through:
25 backstroke @ :15 rest
25 freestyle @ :15 rest
25 breaststroke @ :15 rest
25 freestyle @ :15 rest
(200)

Warm Down
100 easy

Total: 1,000 meters

The scaly-foot snail has evolved a shell made of iron sulfide. It builds a shell out of iron. On top of this, the squishy part that protrudes out of the shell, known as the foot, is also covered with iron plates, making this snail magnetic. And it's all thanks to bacteria, which seem to be building the armor. No other animal on Earth can utilize iron this way. The snail hangs around hydrothermal vents, where seawater percolates into the crust and is heated by underlying magma, reaching 750 degrees F or more, pouring out and bringing toxins with it.