The Marshall system is a system of categorising sea serpent sightings developed by Carl Marshall in 2018, partially influenced by the Heuvelmans system, Coleman-Huyghe system, and Michael Woodley. The twelve Marshall types are the great sea horse, giant sea centipede, mega-eel, giant marine crocodylomorph, giant chelonian, unknown cetaceans, unknown sirenians, Beebe's mystery manta, great shark, out-of-place serpentes, giant octopus, and giant invertebrates.[1]
Types[]
| Name | Range | Marshall's identity | Equivalents in other systems |
|---|---|---|---|
| Great sea horse (Megalotaria sp.) |
Cosmopolitan | Long-necked seal | |
| Giant sea centipede (Mariascolopendra aelani) |
Arthropleurid | ||
| Mega-eel | Cosmopolitan | Eels, serpentine sharks, swamp eels, and oarfish | |
| Giant marine crocodylomorph | Cosmopolitan in tropical waters | Crocodilian | |
| Giant chelonian | Cosmopolitan | Sea turtle | |
| Unknown cetaceans | Cosmopolitan | Cetaceans |
|
| Unknown sirenians | Cosmopolitan | Sirenians |
|
| Beebe's mystery manta | Cosmopolitan in tropical waters | Manta ray |
|
| Great shark | Cosmopolitan | Giant shark | |
| Out-of-place serpentes | Sea snake | ||
| Great octopus (Octopus giganteus) |
Atlantic Ocean | Octopus |
|
| Giant invertebrates | Cosmopolitan | Tunicates, ctenophores, cnidarians, and ribbon worms |
Notes and references[]
- ↑ Marshall, Carl "21st Century Sea Serpents," Animals & Men, No. 64–65 (June 2018)