Bushcraft ?

[swbirdy64]

Well to put it in a nutshell I would define beachcraft as coastal foraging and surprisingly fishing as you put it is a very ineffective method of gathering food too time intensive.
And of course just like the land the coast and sea are very seasonal, no good looking for something that wont be there.
Of course bushcraft skills are very useful and are required, but other skills are specific ie fish processing, smoking, drying ect.
I go back to the point it does not matter where you are based but access to coastal foraging is a good asset to have, if you are able to exploit it.