The red one definitely looks like carnelian, and thats quite a good stone for an ocean deposit. It looks tumbled though and I would be very surprised if it is natural. I suggest you go to the same spot where you found this and look for more, and if there are more there this can be a documented locality.
The color-zoned one is also intersting. Perhaps it was once part of a brick. Hard to tell. The shiny one looks its got mica on it - perhaps a waterworn pebble of mica schist. The mica is what is making it glittery. The white one looks like quartz. Hope this info is helpful!