The mighty Spermwhale is a fantastic creatures that dives in the abyss of the oceans. It can reach up to 2000m depth in one dive and can hold his breath for long time and up to an hour. Spermwhales produce the most powerful and loud clicks of any cetaceans in the world. Their head is so big that clicks travelling within it are composed of multiple pulses. A first pulse (P0) is emitted by the right nostril by the contraction of a specific organ called the "monkey bag". This pulse travels all around but is concentrated backward through the "Spermaceti organ",  banging on air sacs located on the skull plate and refracted into the "junk organ" to create a second pulse (P1). Most of the energy is concentrated forward but some of the pulse is refracted backward, passing back to the spermaceti organ and Junk organ, creating a third pulse (P2). Moidjio CRCAD has recorded spermwhales in Comoros, Turkey, Greece and Italy in 2018 and 2019. We are suspecting a migrating population in the Comoros and our team has recorded it 2 years in a raw but no visual yet!