Inside, the Colosseum had seating for more than 50,000 spectators, who may have been arranged according to social ranking but were most likely packed into the space like sardines in a can (judging by evidence from the seating at other Roman amphitheaters). Awnings were unfurled from the top story in order to protect the audience from the hot Roman sun as they watched gladiatorial combats, hunts, wild animal fights and larger combats such as mock naval engagements (for which the arena was flooded with water) put on at great expense. The vast majority of the combatants who fought in front of Colosseum audiences in Ancient Rome were men (though there were some female gladiators). Gladiators were generally slaves, condemned criminals or prisoners of war.