Below is our walkthrough for Angry Birds Epic Southern Sea Level 3. One strategy is to surprisingly trade out Bomb for Chuck. The first wave is pretty simple, launching attacks one pig at a time and healing with Matilda when possible. Use the Rage Chili with Chuck at the beginning of the second wave, and again at the beginning of the third wave.
Note: Completing this level retrieves the Yellow key! You may now either return to Eastern Cobalt Plateaus Level 3 or continue chronologically to Desert Island Level 1 — which is just above the swirling vortex.
If you have a different strategy for completing this level feel free to leave a comment below. Be sure to check out the rest of our Angry Birds Epic walkthroughs here as well as join the conversation in the Epic Forum.