Monkfish is fine....some call it the poor man's lobster..... I guess from the texture, cause it doesn't really have much flavor on it's own.....only what you impart upon it in the preparation. (Garlic Butter.....yum). I do believe monkfish and anglerfish are one in the same.
Blowfish......
.... give me all ya got!.....used to catch them by the boatloads in Jersey when I was a lad (not the 40+, fat, bald, beer swilling guy I am now....
)....one of the sweetest and tastiest fish I ever had....and prep was simple....bread and fry....yummy!
Never had Sea Urchin, but would try it in a second.....hey, I 'll try most anything at least once......