The pools skimmer should do that by itself. If the water level is too high (or wier is missing)the skimer will not be able to draw the floating debris into the filter. As for the residue that sticks to the sides, it can be brushed off and scooped up with a net.
The green metallic bee has a green head and will burrow into the ground. You will notice that when they return to their underground nest that their legs are loaded with bright yellow pollen that they have gathered for flowers in the area.
It's pollen grains
a pollen cell is yellow/orange
yellow
It's pollen.
yellow
because of the pollen i dont know why the pollen is yellow
pollen grains are the yellow powdery in the anther.
Pollen powder
POLLEN
Pollen
Since most pollen is yellow any plant with a red flower would fit the description