Natsu with Lisanna, watching over their Dragon Egg. One day, Natsu found an egg in the forest east of Magnolia. Thinking it to be a Dragon Egg, Natsu took it to the guild and asked Makarov to make it hatch, but Makarov and Erza told him that he was the only one that could make the egg hatch; through love and care.
1 As a Decompression Chamberâ This is a hyperbaric chamber used by surface-supplied divers (commercial divers mostly) to make their decompression stops.  As Recompression chamberâ A hyperbaric chamber is used to treat or prevent patients suffering from decompression sickness.
An embolism is a blockage in the bloodstream. Hyperbaric oxygen therapy in a recompression chamber is the primary treatment for air or gas embolism. Decompression sickness is the formation of gas bubbles in body tissue and blood caused by a sudden decrease in pressure around the body. Hyperbaric oxygen therapy in a recompression chamber is the primary treatment for decompression sickness. Anemia is a lack of oxygenated blood, specifically red blood cells (RBCs).