Blood sucking beach dwelling crustaceans..........
On a more serious note relating to the beach at Mirador...................
That beach is the most perfect habitat for two little nasties of the shrimp, crab and lobster group of marine crustaceans. These would be the Isopods and Amphipods AKA: Sea Fleas and Sand Fleas. Both are blood suckers and the Sand Flea not only bites but injects a digestive juice into the victims flesh in order to ensure a seeping wound that almost immediately alerts the hundreds of fellow biters and suckers that abound in the wet coarse loose sands at Mirador. If you fish from shore and leave your catch on a stringer in the shallows you will most likely notice dozens or sometimes hundreds of the little 1/4 inch long pill bug looking beggars swarming over and inside your fish even while still alive.
The Sand Flea is an Isopod related to the common Pill Bug and Sow Bug found in gardens in temperate climates. They are quite harmless and actually do little if any damage to garden plants. The Sand Flea is typically a scavenger between the intertidal zone that is the first to claim a fresh washed up waif whether it be a fish, bird, sea turtle or whale. Just flip over any carcass still on wet sand and you will see them, sometimes by the thousands. One of the funniest things to see at Mirador beach is little kids that plop their butts down on the sand in the waves a few inches deep then get up screeching and scratching. The culprit is that little nasty the Sand Flea. They drop off as soon as the kid stands up and they are away from the sand and the parents rarely have a clue as to what the kid was screaming about.
The Sea Flea is an Amphipod that is a free swimming hunter that seeks living animals. They grab prey many thousand times larger than themselves and take a quick bite and blood suck and are gone before you even see them. They are particularly common in the knee deep waters at Mirador especially in late summer when the water temps are in the 90's. They are small, only 1/2 inch or so but still give a painful bite.
Many shore fishermen have seen the larger version of these creatures in the mouths of reef fish especially the Grunts around PP. This nasty is known as the Tongue Eating Louse. It is an Isopod that enters the mouth of the fish through the gills then attaches itself to the back of the tongue where it has a continuous supply of fresh sea water while sucking up an endless meal of delicious fish blood. As the Louse gains size it eventually completely replaces the fishes tongue. Most fish that I have caught with them in the mouth don't seem to be any less healthy than one without it's gross parasite.