Glojo,
[CONSERVATION] I'm pleased to report that dynamite (and cyanide) fishing is now illegal just about everywhere. I still come across evidence of illegal dynamiting in places like Thailand, but they're getting bewtter at policing. It is so destructive: kills way more fish than you ever recover and it does decades or centuries of damage to reefs. [/CONSERVATION]
I don't know much about this either, but can tell that nukes as depth bombs need to be small yield for use at depths less than 40m to avoid damage to other shipping. WE177 was selectable to 10kT for just this purpose.
Courtney