Fishing anything above level 40 can be a real pain in the ass if you are someone that doesn’t pay for a Runescape membership.
Fishing Lobsters, Swordfish and Tuna is possible in OSRS as a F2P player, unfortunately its a much slower process to bank your catches if you are looking to make decent money.
Cage & Harpoon fishing spots can be found at the northern shore of Karamja Island (red circle) on the small wooden pier. To find it, take the boat that costs to Karamja from Port Sarim (orange circle), follow the path east until you reach an opening in the fence. Head north-east from the opening and follow the shore until you find the small pier with the fishing spots. The boat to Karamja costs a whopping 30gp.
If you are looking to save up the amount of lobsters of swordfish you catch to sell in the future, the fastest way to get them into your bank is using the Deposit Box found on the north side of Port Sarim, marked with the blue circle in the image above.
With the deposit box, you can only place items into your bank, you are not able to remove any items from it. This means you are going to need to bring a decent amount of cash so that you can travel to and from the island. If you run out of money on the island, you can always sell your lobsters or swordfish at the general store, south of the fishing spot.
If you just want the Xp and levels and don’t care for selling the lobsters and swordfish in the Grand Exchange in the future, you can sell your catches in the general store, saving you the time between trips to and from the deposit box and island. This method gives a lot less money when compared to selling the catches in the GE.
Is this ‘F2P Guide to Fishing Lobsters, Swordfish and Tuna in 2007 Runescape’ helpful? Let me know if any improvements could be made and if I missed out some key details that you would include.