Very simple, you stick the turkey baster where you see the wiggling fries.
To find the wiggling fries, first you have to locate a breeding pair, wait for them to lay the eggs, wait a couple of days in Summer months, longer when it's colder than 76 in the water, and the pair will deposit the fries in a hole in the substrate. If you wait longer, there may be more than one hole. The hole that has a dark circle in the middle has the fries.
I was just in Waikiki beach last week. Where are you guys hiding the PB?. All I saw were bikini clad humans.