The two errors are missing the verb "will" after the pronoun "I" at the beginning of the sentence, and there is missing the article "a", after the word "watermelon".
The correct phrase would be:
<em>"In today’s blog post, I </em><em>will </em><em>teach you how to make </em><em>a </em><em>watermelon salad with feta and mint! With less than five ingredients, it’s a feast for the eyes and the palette."</em>
Puffer fish protect themselves by making themselves big to scare away predators. When a pufferfish sees a predator they will inflate themselves, they want to look big and scary in hopes the predator will leave. they protect themselves kind of like humans, trying to scare away predators.