What constitutes the minimum equipment that recreational divers should have and use on every dive? To some degree, this will be a factor of the environment and the purpose of the dive. Divers in cold water require more thermal protection than divers in warm water. Divers engaged in activities, such as underwater photography or night, deep, wreck, ice or cavern diving, require additional specialized diving equipment that sight-seeing divers in » Read more: Scuba Diving Equipment – the Completely Equipped Diver