We had three starting populations. Sharks, Minnows, and Seaweed. To survive, the sharks had to eat 2 minnows. Minnows had to eat 1 seaweed to survive. It starts with 1 shark, 4 minnows, and 14 seaweeds. Our goal was to get each species to either multiply or stay the same. Our strategy was for the minnows ate 2 seaweed, and the sharks eat 2 minnows. That way, seaweed went up, minnows stayed the same, and sharks stayed the same. Once we had enough seaweed, each minnow ate 3 seaweeds so they reproduced, and the shark still ate 2 minnows. Since then we had 6 minnows, the shark at 4 minnows, and that added one more shark. At the end our results were:

Seaweed:92

Minnow:8

Shark:2

If we kept going on, I think each population would go up, and the seaweed would be the highest.