Knowledge: To catch squids, fishers go to the Indian Ocean as the big and impressive ones are available. On the other hand, very large crabs can be easily found in Russia.

Conversation:
I just love the beach. Do you know anything about it's coral reefs?
Unfortunatelly, I don't know anything about coral reefs, all I know is that beaches are composed by particles made from rock, like gravel, sand, pebbles and others
Where do those materials come from?  Are they washed up from the ocean?
I am not sure about where they are from but I know that they can have a biological origin also, like mollusc shells.
Do any animals live on the beach?
I am not sure about that either. But I know something interesting: Beaches occur in areas where the sediments are deposited and reworked by current or wave action
I just love to eat crabs for dinner.  I wonder what attracts them to the area.
I can't confirm you the reason but I know that they are the largest arthropod that lives in land in the world. Impressive, right?
Yeah, that is impressive! Do you know where I can catch the big arthropods?

Response: Oh yeah, Russia is the place to find very large crabs.