Diving Girl

• Oxygen toxicity
• Shallow water blackout
• Deep water blackout
• On jumping into water: divers sometimes jump into water feet first from some height above the water (e.g. from a large boat or from a pier). Jumping into the water headfirst is unsafe for those wearing any sort of scuba or snorkelling equipment. In particular, an open-circuit scuba on the back is big and hard and heavy and during a headfirst dive into water may cause back or neck injury or break the neck.