tide pool nano tank?

[nanoreefer]

i was thinking of setting up a small nano tank with some stuff i could collect at the beach next time i go, but would critters from the white rock area need a chiller to stay alive? i was thinking of getting just stuff you would find at low tide and sence i figer it would be more used to warmer temps(and easy to get)but is there any other stuff there besides crabs and small fish like some kind of low light anenomes shrimp ect? and would anyone know the SG of the water in white rock so i could get a tank set up with sand ect before i go and collect some live stock?

any help would be realy nice tanks!