French doctors are looking at sandworm blood as a beacon of hope for patients with respiratory trouble caused due to the novel coronavirus. Two Paris hospitals will start tests of a treatment based on the hemoglobin of lugworms, which they hope, may be effective in increasing levels of oxygen in the tissues of Covid-19 patients. According to a biology researcher, the blood of sandworms stores oxygen for up to six hours between tides. Now, the two hospitals will test whether the blood is safe to inject directly into humans and if it oxygenates the tissue. The trial will occur in phases, administering gradual doses after seeking consent in patients. The unusual treatment is still in its early stages.