In this study we apply our recently developed low backscattering algal bloom detection technique, the Red Band Difference (RBD), to detect various toxic dinoflagellates blooms around the world from space. Detecting and monitoring dinoflagellates blooms is extremely important since they can produce some of the most powerful poisons in the nature. Furthermore, marine toxic blooms are usually caused by dinoflagellate species and they account for approximately 75% of the toxic blooms (Smayda 1997). Since dinoflagellates are well known to migrate vertically, these populations migrate up to the surface for photosynthesis during the day, and consequently, their dense aggregations produce strong bio-optical signals that are detectable by satellites. Here, we present bloom detection results from various regions around the world which confirm the potentials of the RBD technique.