ok so, a note on urban and suburban hunting and fishing. mostly fishing,(because I don't think this has been covered yet?)
first thing, this article http://www.thestranger.com/seattle/the-urban-hunt/Content?oid=81126 for a guy who went out and bagged pigeons and rats among other animals
before you fish or hunt you need to get a license for what you are about to go fish or hunt, these can run expensive, but will last you all year, if you opt for a lot of add on's like extra tags for stuff like cougars or salmon it will be more expensive but probibly not more than buying several whole slamon. (assuming you have the gear and the skills to get a salmon)
there may be situations in your state where you can kill with out a licnece, but I doubt it, and remember if you get caught, in addition to any fines levvied against you they will take all the gear you have on you as well. this can include your boat if you're lucky enough to have one.
so, Don't Poach
on fishing: the gear for fishing can look very expensive, but if you are looking to find and reel in trout you can get buy with a cheapass pole,reel, and used tackle from a garage sale or the kidddie section of fred-myer, you may need new fishing line, if the line has been on the reel for too long it will curl and when asked to do something exciting like reel in a fish will snarl and snag on itself. you can dig for your own worms but you might not get as many worms as you'd like and most fish will not go for a red worm from your compost pile speared on a hook bigger then the worm. go for bait and not fancy lures unless you already have the lures.
you may also want a creel, a peice of heavy plastic string with a huge needle on the end, this is for keeping fish alive and caught. attach one end firmly to your boat or whatever with the needle end hanging free, upon catching a fish, bring the needle up from under through the middle of the jawbone under the tongue of the fish, where the hyoid bone is in humans, so that the fish is threaded like a bead on the line, release fish back into the water and secure the pointy end in anticipation of getting another fish to put on it.
do this fast and they'll stay alive in the water while you get a few more.
fish are very easy to clean. smack it once or twice sharply on the back of the head untill it stops wriggeling, then cut from the "vent" at the hind end to the throat being careful not to peirce the intestines by cutting too deeply. the fish should be open like a wallet filled with guts, gently scrape them out. most should go easily, the swim bladder and (I think) the kidneys are often stuck to the spine, you gotta scrape it good or the leftover guts will rot your fish or make it distasteful before you can eat it.
a steak or grapefruit knife works fine for all this.
you can remove the heads or not, it's a matter of style, if you chose to take it off you can make fish stock out of the heads or use them for crab bait. but they do stink so they must be stored in a gag in the freezer or used promptly.
the easiest way to cook trout is on a bed of onions, if you have bacon, cook a strip or two down a bit for the grease, put the onions in that and put the fish, skin on, on top of that, flip it once and remember that in general fish cooks fast.
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when you go looking for shellfish, you may need a specific shellfish license, those can be bought for the day and run cheaper then a bucket of clams at the store.
you will need a bucket a shovel and a tide table if you're looking for clams, oysters, or mussels, stranded whales, or half eaten shark kills to scavenge from. in general, times of the month with particularly low tides are the during the new and full moons and on the west coast you get around two tides a day. if you don't have all day to wait for the water to recede check the tables first.
you mostly gotta poke around, look for squirts and dig after them, clams will flee you and shovels will pulverize shells if used improperly. don't keep animals smaller then the limit, or more animals than the limit for above mentioned fish and game department reasons. throw back oyster shells because more oysters will grow on them later.
mussels cling to things, look for big ones and pull them off carefully, mussel shells are more delicate then clams or oysters.
to cook, oysters because you should have cleaned them on the beach and thrown back shells, should be gooey blobs of snot in a plastic bag, fry them. first extract individual blob, wash it off under the tap, then dip in egg/milk mixture and bread and fry as normal. voilah!
clams and mussles must be steamed, put them into a pot add some water, try not to boil them, and boil, turning the pile as necessary, until they have all opened up.
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voilah!