Coffinfish

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Warm Up
500 swim
300 K/D/S by 25 IM order
8 x 25 @ :30 —> 2x through: build up, build down, easy, fast
1000

Set 1
5x through:
3×100 free swim @ b +5 nice and smooth
1×300 free swim @ b, holding b -10 or so (comfortable pace)
3×100 free swim @ b cruise
1×300 free swim @ b Desc 1-5 to fast (#1 should be same effort as first 300, by #5 looking for a fast 300)
6000

Warm Down
4 x 50 kick down (no board), easy back @ b +20 (or your choice, nice and smooth)

TOTAL: 7,200

Main set via

Also known as "the sea toad," these deepwater fishes are relatives of the frogfish. These creatures have a small lure, protruding from a depression behind their eyes. Coffinfish use it to lure prey toward them, and because there is so little light at the depths where they live, it allows them to quickly attack. According to Smithsonian Magazine, these fish also "boast such sizable gills that they can increase their body volume by up to 30 percent upon inhaling a significant quantity of water." That would be the equivalent of a human inflating their lungs to become the size of their full abdomen.