Grimpoteuthis imperator

Grimpoteuthis imperator, also known as the Emperor Dumbo octopus, is a species of deep-sea octopus in the family Opisthoteuthidae. The species is known from a single male specimen found in the Emperor Seamounts in the north Pacific off the coast of Japan in 2021. It was found at depths of 3900–4400m.[1] The species was described using non-invasive methods such as CT scan and 3D imaging to preserve the only known specimen but to still be able to describe the species.[2] Through this approach,

Grimpoteuthis imperator
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Opisthoteuthidae
Genus: Grimpoteuthis
Species:
G. imperator
Binomial name
Grimpoteuthis imperator
Ziegler & Sagorny, 2021

Initial research

The single cirrate specimen was collected in the North Pacific Ocean during scientific cruise SO-249 BERING (R/V SONNE) using a chain bag dredge. When discovered, the animal was dead and was immediately transferred to a bucket of cold seawater. Several small tissue samples were collected from a single damaged arm. These tissue samples were then placed inside small plastic vials each filled with one of the following fixatives: 2 ml of 100% ethanol, 2 ml of 4% paraformaldehyde solution, 2 ml of 1:1 acetone/methanol solution, and 5 ml of RNAlater (Merck KGaA, Darmstadt, Germany).

References
  1. Ziegler, Alexander; Sagorny, Christina (23 April 2021). "Holistic description of new deep sea megafauna (Cephalopoda: Cirrata) using a minimally invasive approach". BMC Biology. 19 (1): 81. doi:10.1186/s12915-021-01000-9. ISSN 1741-7007. PMC 8063452. PMID 33888110.
  2. Magazine, Hakai. "Seeing Inside the Newly Discovered Emperor Dumbo Octopus". Hakai Magazine. Retrieved 24 April 2021.


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