Galls?

I believe that these are all galls, which are things that some arthropods ("bugs") cause plants to make for the arthropods' benefit. Usually the adult "bug" makes the plant form a gall so that its larvae (kids or babies) have a place to live in to hide from predators and eat part of the plant. I'm hoping that some people who know more than I do about galls will chime in and give me more information that I can post. In the meantime, you can find more information about common galls and gall-makers here:http://www.cals.ncsu.edu/course/ent525/close/gallpix/index.htm or about every gall many galls that people have taken pictures of here:

http://bugguide.net/index.php?q=search&keys=galls

Aquatic life in sandhill habitat

This is most likely a mole cricket burrow at the edge of a pond/lake. They make what look like small mole runs, in damp sand and also have modified front legs that look something like moles. Some are pests, but others are inconsequential. All of them are pretty cool looking little monsters. More pictures here http://bugguide.net/node/view/4283/bgimage

This is obviously not living in the water, as it is hanging out on a pine tree, but before young dragonflies transform into adults, they live in the water and prey upon other invertebrates and even small fish or tadpoles. This adult was found not far away from the pond/lake where the rest of the pictures in this post were taken. It is most likely Ladona deplanata, aka a Blue Corporal. Yes, I know that it's not blue, but this is most likely a female, which are a different color. Pictures of males and other females here http://bugguide.net/node/view/27364/bgimage

This is a carnivorous sundew (genus Drosera and most likely D. brevifolia), which I've posted other pictures of, that is about to flower. There is a picture here http://www.florida.plantatlas.usf.edu/plantimage/Drosera_brevifolia5.jpg of what it may look like when it flowers.

These are some ants, most likely fire ants (Solenopsis invicta) that were flooded out of their nest. They floated on the water and gathered together and are now clinging to a plant that sticks out of the water in hopes that the water goes back down.

This is a young backswimmer (family Notonectidae) that is just under the surface of the water in a pond/lake in sandhill habitat. Sandhill habitat is xeric (meaning very dry and pronounced as if the x were a z), but there are temporary and permanent wetlands in some sandhills. I think that you can see why it's called a backswimmer. It swims well and its long back legs are kind of like oars on a boat. It eats other insects and invertebrates.

pollination

Yes, I am aware that these are not bugs. The first one is the stamen and the second a pistil of an Azalea flower. You can see the pollen coming out of a hole in the anther (dark end part) of the stamen and a few tiny pieces sticking to the stigma (the sticky end) on the pistil. These anthers are "poricidal", meaning that they have little holes. This type of anther is associated with buzz pollination by insects, which basically means that they vibrate the flower to get the pollen off of it. Pollen is what some insects, usually bees, but also moths, beetles and others depending, carry from one flower to another so that they plants can produce seeds. Some plants only have one pollinator and others have many, and not all plants use insects for pollination. Some let the wind carry their pollen to other flowers and others use other animals, such as hummingbirds or even bats.

obligatory butterfly picture

This is Urbanus proteus, or Long-Tailed Skipper butterfly, feeding on nectar from a flower. You can see the proboscis, sort of like a straw crossed with a tongue, sticking into the flower. Skippers are somewhat more related to moths than most other butterflies and they have antennae (the plural of antenna) with hooked clubs at the end, which you can also see in the picture. Most people don't know that there are more than ten times as many moths as there are butterflies, and it's difficult to believe because most people have seen more butterflies because butterflies come out in the daytime and are relatively large. Also, many people think of butterflies as important pollinators of plants, but they are relatively insignificant compared to bees and some moths. While butterflies are pretty, and of course important because they are one of the "little things that run the world", they are not anywhere near as numerous or important as their relatives, the moths.