A greater blue ringed octopus ( Hapalochlaena lunulata ) flashing its bright blue color ring shaped markings on its body. This tiny marine creature is one of the world's most venomous ( potentially deadly !! ) animals. If provoked or handled, it may bite despite its friendly nature. Blueringed octopus venom is produced by bacteria in the saliva in the mouth of the octopod. Unfortunately there is no antivenom and after a bite the venom could paralyze and eventually kill an adult human within minutes to a few hours. Death is caused by heart failure due to paralysis of the respiratory muscles. When bitten, victims must be admitted to a hospital as quickly as possible as they will need artificial respiration in order to survive. If the condition of the patient is stabilised with artificial respiration then over time ( several hours to days ) the venom will be completely metabolized by the body itself and the patient or victim will recover completely.

This footage was filmed during a shallow dive at a depth of 4m on Suci's Reef in Tulamben, Bali, Indonesia. The divesite is also famous for the wreck of the USAT ( USS ) Liberty which ran on the Tulamben beach after being hit by a japanese torpedo during the second world war. The ship is now host to many marine species such as this blueringed beauty.

Equipment used to make this video: Samsung galaxy S4 with Watershot housing and single Big Blue Black Molly video torch. I can recomment cold water wetsuits even for tropical ocean when doing video for an extended time in shallow water (you simply always stay warm, no matter how long the dive). I like to use competitively priced quality scuba gear such as Mares (regulator), Bare (wetsuit) and Suunto (dive computer). All the underwater stuff you need can be found here:
https://shareasale.com/r.cfm?b=473560...

Music: 'The Return' by 'nisei23'

Free download:

http://freemusicarchive.org/music/nis...

Want to see something really great about human interaction with an octopus?

Watch ' My octopus Teacher ' a docu about a freediver and an octopus (on Netflix)

Highly recommended!