On the right.

I think it's a male specimen.

A mating pair with head of the male missing.

Journal entry https://www.inaturalist.org/journal/vijaybarve/27589-sexual-cannibalism-in-praying-mantises

Patch of ~30, in ruderal area next to fire road. Plants mostly stunted (~2 inches tall). All (I think) were pulled but not bagged or removed.

Lone individual crawling on a log in a relatively dry area near the top of the trail (not far from where the Lancaster Conservancy trail joins the Mason-Dixon Trail).

These two were fighting at the Memorial Plaza at Theodore Roosevelt Island in Washington DC.

I saw one of these on three different occasions last year.at the island. Wonder how they got there?

In the marsh area

Note: Kenilworth Aquatic Gardens are in Washington DC (the District) .... don't usually expect to see a big buck in the District. I saw 3 does about 1/2 mile away in the park.

Achieved! Thanks to @entomo-logic.

Roughly 10cm long, transparent body with reddish 'tentacles' around the base.

Seen at 6m depth in 10m water.

Tentatively identified as a Hula Skirt Siphonophore (Physophora hydrostatica)

You perhaps were not aware that river otters eat at Kentucky Fried? (I didn't stage this.)

Thought it was a giant earthworm at first!

Nearly perfectly still rat snake possibly waiting for the humans to leave to consume a meal of rat. This was between 15:00 and 16:00. Weather was hot and humid. It was to the side of a sidewalk.

Cucujus clavipes. Rock Creek Park, Washington, DC, USA.

Something's causing these leaves to swell up and turn pink, like some rusts do but I couldn't find obvious fruiting bodies.

ant trapped in plant

Speckled Rattlesnake

Crotalus mitchellii

150-mile area, Esplanade, of the North Rim of the Grand Canyon (marker on map may be incorrect).

Remarkable roosting group of dragonflies found early morning along the Nature Trail in the WII Campus.

Found in moist wooded area along trail.