Answer:
An interesting episode of the aquarium I had was seeing a dolphin show. The dolphin was super smart, and I have to admit it was smarter than me. I mean I was like 3 when I went there so, I guess that is normal? Anyways, the dolphin was doing cool tricks like twist jumping, and even I tried it but failed. The dolphin went to the worker when the worker called its name. I learned that day that you shouldn't underestimate dolphins because they are smart.
Step-by-step explanation:
This is an example, so do not copy. You may get inspired.
1 sentence:introduction(aka what you liked or found interesting stuff about the aquarium)
2-4 sentence:the main area(talking about what happened)
1 sentence:conclusion