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Concentrations of Karenia brevis during exposure. Image source: Florida Fish and Wildlife Conservation Commission.
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Unfortunately, he swam into a large area of red tide (Figure 1).
Karenia brevis proliferation. Source: Florida Fish and Wildlife Commission.
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Florida red tides occur due to high concentrations of algal blooms, particularly Karenia brevis (K. brevis) which gives the water a red discoloration (Figure 2).
(a) and (b) At the time of presentation, axial computed tomography of the chest images show upper lobe predominant ground glass attenuation, mild interlobular septal thickening and small cysts. (c) and (d) Eight weeks following treatment, axial computed tomography of the chest images shows near complete resolution of ground-glass attenuation, interlobular septal thickening and cysts.
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Computed tomography (CT) of the chest showed a lower predominant ground-glass attenuation, along with small cysts and smooth interlobular septal thickening (Figures 3(a) and 3(b)). CT chest obtained 8 weeks after initial presentation showed significant improvement of the ground glass attenuation and interstitial thickening (Figures 3(c) and 3(d)).