Bionic Seaweed is the second stage in Quarantine Isles.
This is one of the levels where Banner Cat can really shine as her weaken will help you keep them in control and her higher proc rates and short recharge time can make them weaken the enemies forever. Bring any anti-metal cat and critical hitters as well, as you will need them.(However,Tesalan Pasalan isn't useful here due to the high amount of peons in the way).
Strategy 1: Bring 4-5 meatshields. Fill the remaining slots with proccers and critters. Bring cat CPU. Stall the metal one horn and the metal doges for money. When you hit the base, lure the Sir Metal Seal to your base, then turn on cat CPU. If this is done correctly, you will never run out of money, and win the stage.
If the strategy doesn’t work, upgrade your cats and try again.
Strategy 2 (Ubercarry):
Powerups: Cat CPU
Stall the beginning metal enemies to build up your money. When you are ready, send in Catasaurus and other critters to kill the Metal One Horn and Metal Doges. The Doges will help you build up your money. When you hit the base, don't send in anything, but turn on cat CPU when the Sir Metal Seal approaches. Hope that your cats will proc/hit, and watch the show. Good luck!
Strategy 3 (feat. Seaside Neneko, no ubers)
Bring 5 meatshields, including Pair Rope Jump Cats, and also Waitress Cat (at least level 30), Seaside Neneko (at least level 25 is recommended), and two other critters of your choice with reasonably high crit chance (I used Power Backhoe Cat and Crazed Whale but any will probably do). The last slot can be filled with Banner Cat or any other cat of your choice. Set your cannon to Waterblast; mine was about level 5. Kill the Metal One Horn but don't send out your 100% critters yet unless you're in immediate mortal danger; stall the Doges until you have plenty of cash and you've upgraded Worker Cat a couple times. When the Super Metal Hippoes and Sir Metal Seals come out, start meatshielding like crazy to protect Waitress and Neneko. They both should be able to get at least one critical hit in each without dying. If your cats are leveled high enough, you should prevail.