The sentence you shared is mostly correct but can be made even clearer with a small change. Here's the original sentence: "In the hot savannah, animals meet near water. An elephant sprays water from its trunk, and a pelican catches fish in the skin pouch under its bill."
It is grammatically correct, but to make it easier for a young child to understand, you could say: "In the hot savannah, animals gather near water. An elephant sprays water with its trunk, and a pelican catches fish with the skin pouch under its bill."
Both versions are good, but this version uses "gather" instead of "meet," which might be easier for young kids, and uses "with" to clarify how the pelican catches fish.