Shrieky had absolutely no clue as to what a sea krait was, but telling this to Rex might just end the conversation, and that would be completely unacceptable. Instead, he answered with all the guile of a lonesome mermaid, "Well, I did live in salt water, so it's entirely possible I have seen one! However I mostly just made up names for the things in the moat, so in order to be sure, you should tell me about sea kraits?"

Shrieky tries to look as if he is being truthful, as well as being quietly intrigued by the concept of underwater snakes!