What are the Omaha high low hand rankings and how do they compare to traditional poker hand rankings?

In Omaha high low, the best hand is one that can win both the high and low pots. The rankings are similar to traditional Poker hand rankings, but with some differences. For example, in Omaha high low, a low hand must have five cards ranked 8 or lower to qualify, and straights and flushes do not count against the low hand. This means that a hand like A-2-3-4-5 is the best possible low hand.