Cool.
So like, there is this really cool video (this is totally true, BTW), of deep sea brittlestars (that have these really sharp pointy teeth and stuff), and they actually catch rather large fish and squid (but more like a head lock type approach than the green brittle cage) and a bunch of brittlestars will jump on board and eat these critters alive...there is this one scene where they are eating a squid, which is trying to get away in desperation, and one brittlestar has a tentacle of the squid and it is just munching straight down like it is eating a hot dog.
SO COOL.
Hope that helps with your nightmares. THEY REALLY CAN (I mean can't) CATCH YOU.
RUN RUN RUUUUUNNNNN (I didn't make it myself.)