The Death Of My Crabs

I went to the beach in Santa Cruz the past week and while I was there I caught two Sand Crabs!! I was excited at first because I thought in my 19yrs of life i finnally had my own pets!! I named them and took them home with me. I found that they ate Algae and i was looking online for somewhere to buy it. Okay.. sure call me dumb but i really wanted to keep them alive. While i was doing my reserch online my Crabs diedin the bathroom!!! soooo sad !!!I left them there the whole night and by the next morning my entire apartment smelled like a dead ocean!!! YUCKERZ!.. so.. I threw them away... and im still waiting on my pet.. a pet that i can keep alive for at least 24 hours