What is Neptune's sword called?

It is called a Pyrosome, and is made up of individuals known as tunicates. Pyrosomes, or purse salps, are found in open seas in both temperate and tropical waters. This pyrosome, called Neptune's Sword (Pyrostremma spinosum) has been recorded to reach a colossal 30 metres in length.

qm.qld.gov.au - November 2018 - Queensland Museum

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November 2018

Neptune’s sword

Neptune’s Sword (photo: Elsa Chang and Leo Lee)

What is this beautiful gelatinous tube? Creature or colony?

Answer

Neptune’s Sword (photo: Elsa Chang and Leo Lee)

This amazing creature is actually a colony of animals. It is called a Pyrosome, and is made up of individuals known as tunicates. Pyrosomes, or purse salps, are found in open seas in both temperate and tropical waters. This pyrosome, called Neptune’s Sword (Pyrostremma spinosum) has been recorded to reach a colossal 30 metres in length. Many of the common Salps are much smaller, some less than a centimetre, and vary greatly in shape. Salps are an unusual group of marine animals that float freely in the currents, filtering as they move through the water to feed on plankton. The Salps are fast growing and live initially as solitary asexual forms. They then aggregate to form long chains of sexually active well organised clusters that can reach impressive lengths, appearing as semi-transparent hollow tubes that are sealed at one end. They were described by one diver as being ‘as delicate as a feather boa’. And adding to their mystery and allure, they can even glow in the dark. Though the salps look like jellyfish they are part of the Phylum Chordata, that group of animals that share a dorsal nerve chord. They do not have a backbone, but the group include all of the vertebrates or backboned animals such as mammals and birds. Salps belong in the same subphylum, Tunicata, as do the sea squirts. Fish, turtles and birds find the salps to be a tasty bite. What would you do if you came across Neptune’s Sword?

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Is The sword of Heaven Real?

Any well-crafted katana, or traditional Japanese sword, is a blade of beauty, but the Sword of Heaven is extraordinary due to its materials. The blade is forged from a fragment of the massive Gibeon iron meteorite that landed in Namibia in prehistoric times.

cnet.com - 'Sword of Heaven' katana blade forged from meteorite - CNET

Chiba Institute of Technology

There are some famous space-related weapons in the world of fiction, including lightsabers and Sokka's meteorite sword from the animated television series "Avatar: The Last Airbender." Now there's a real sword that could give Thor's hammer Mjölnir some competition when it comes to space cred. Tentetsutou ("Sword of Heaven") is a katana created by Japanese master swordsmith Yoshindo Yoshiwara. Any well-crafted katana, or traditional Japanese sword, is a blade of beauty, but the Sword of Heaven is extraordinary due to its materials. The blade is forged from a fragment of the massive Gibeon iron meteorite that landed in Namibia in prehistoric times. The meteorite is estimated to have formed around 4 billion years ago. The Sword of Heaven is now on permanent public display for the first time at the Chiba Institute of Technology at the Tokyo Skytree tower. It sits alongside a piece of the Gibeon meteorite. "It is thought that the first human encounters with iron were with iron meteorites, and the Sword of Heaven truly symbolizes the relationship between human technology and space," the Chiba Institute notes. The sword joins a select group of modern weapons made from meteorites. The material isn't cheap. Master swordsmith Tony Swatton from the online series "Man at Arms" forged an "Avatar: The Last Airbender" replica sword by mixing a $1,652 chunk of meteorite with steel to create the blade.

Chiba Institute of Technology

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