This shower drain gets clogged, I'm planning to remove the cover and use a drain auger, but it's not clear how to remove. Unscrew? Flip off? Don't see a screw.

Should just pry off

Looks like the style that pops off. Could take a little force if it hasn't been off in years.

Be careful not to damage the shower floor. You can put down a towel or small block of wood to pry against if it comes to that.

Yep, should pop off. I posted the same question here a year or so ago!

Thanks!!
Looks like there may be some caulk there as well, I'll try cutting that away first.

There may just be a cone of hair 12" tall which will pull right out of the trap. I'd be surprised if a modern copper or pvc drain would have a blockage requiring much of a drain auger.

Not very often showers are plugged just in the trap, usually buildup down further in the line.

Cut the silicon around the drain with a knife first then pop it off. Silicon can be very strong if adhered properly.

Get rid of the silicone and it looks like at the 5 and 11 o'clock position on that drain might be where you can jam a screwdriver to pry up on. Might also use a piece of wood for leverage under the screwdriver for prying.

If you think it's just hair in the drain, there is a relatively cheap product you can buy to remove it. Do a google search for shower drain hair removers (or something similiar). They are plastic, barbed snakes that you push down the drain, pull back out and they catch and bring out the hair. We've used them for years and had good luck.

In the DI AR-15 world, they call it properly staked per mil-spec.

I have three long haired girls in the house. This is my friend:

http://thriftmarketing.com/thrift_drain_cleaner.htm

You may not even need to get the cover off the drain, but I suspect it will pry off. You may also try using long nosed pliers inserted into the drain holes and pulling straight up.

it's called Zip-it Tool
found at Home Depot

We’ve got the Zip-It, my daughter wants to use that first.
She’s the one with the long brunette locks.

I found that the Drain Weasel works better than zip it. Also found at Home Depot.

On that grid strainer, the two folded tabs are supposed to secure it in place to the drain assembly. But in reality that sometimes does not happen. Hence the caulk. Possibly a smart slice thru the caulk and then prying with a sharp knife. There should not be caulk, or much caulk, under the strainer. I've never seen a tradesperson embed a grid strainer in caulk.

On one job, the band bathroom at a rock club, I responded to a 'slow shower drain' call. Just removing the grid reveal the issue. A long 'tube' of hair, like the cardboard tube in a box of wax paper, clinging straight down into the trap (the trap was 12" below, under a concrete slab floor, at the ceiling of the room beneath). The blockage came out in one long matted piece.