A scrappy expanse of silky refuges and capture webs littered with body parts of previous victims. When preferred prey is entangled, the female spiders emerge from their 'nests' and overpower it by grabbing its extremities. In this case, a wasp https://www.inaturalist.org/observations/9319446.
Presumably they inject venom because after a minute or so the prey stops struggling. Then they snip it out of the web and carry it into one of several 'nests' or refuges.
Unwanted prey, often beetles (see https://www.inaturalist.org/observations/9319435 ) are also killed but sometimes left in the web, uneaten. Ants, in this case, Maranoplus ( https://www.inaturalist.org/observations/9319390 )scavenge around the periphery of the webs, feasting on unwanted beetles or other left-overs.

Looking down from the jetty, a marvelous scene of epic scope! A bajillion soldier crabs moving in groups and waves, with the front of receding water apparently the most prime spot, worth braving the numerous toadfish patrolling the edge and waiting for the right time to lunge forward in the shallows and run away with a crab. Often they wouldn't get the crab-- it was a bit fast for me to see, but looked like the crab would pinch them in the snoot-- and sometimes when they did get a crab the competition from other fish would be so fierce that the crab would get dropped and escape to shore.