What the shadow looks like if it is from an transparent object?

This is a type of awesomeness that I have not previously seen before, and as a Miami resident, feel that I must acquire one, stat.  It is a transparent canoe kayak…and it is amazing.  Regular kayaking in the intercoastal and Atlantic is great, but this would allow me to see all of the creatures beneath me with an unobstructed view…it is a luxury canak!  Imagine if our exotic rental cars Miami were transparent through the bottom!

Transparent Kayak

This is TRANSPARENT SWIMMING POOL, I want it in my house!

Have you ever used this kind of umbrella?

Transparent umbrella