All In a Day's Work

Let's talk about sharks today...

(While looking at an exhibit full of sharks): "How long can sharks stay under water?"
They can stay under water their whole life, the number of years depends on the species of shark, because they all have different life spans... Oh, I'm sorry, you were asking how long they can hold their breath under water. Well, I don't think they really do that, I'm sure it would get a bit uncomfortable...

(After being shown some shark egg cases): "Wow, sharks lay eggs. So, they're not mammals?"
Umm, no they're not mammals...they're a type of fish.