Crates are found on sea beds underwater, and sometimes on land. It is unknown if whether they spawn in random locations, or have a set amount of possible locations to spawn in, or something completely different. Although crates spawn pretty often, usually in particular spawn points.They are found in the rightmost corner of the map on land in a huge stack.
Crates cannot be moved. They refill a minuscule amount of health, and give a fair amount of points and coins. They give a lot of points for triggering gold rushes for the larger sharks since the larger sharks need more points for a gold rush and crates give lots of gold and points for gold rushes.