Coelopleurus exquisitus

Lore & Background

The species was first identified after appearing on auction website eBay. Simon Coppard, marine biologist and member of the International Commission on Zoological Nomenclature, was directed to a listing on the site in 2004. Coppard was frequently asked to identify species, but did not recognise this particular specimen. Further investigation with the help of Heinke Schultz led him to realise it was a previously unidentified species. The species was given a name fitting its unique and beautiful colouring, with details about C. exquisitus first published in taxonomy journal Zootaxa on 7 August 2006.

Examined individuals of the species show that the test is up to 35 mm (1.4 in) in diameter, with long, curved spines. These primary spikes are curved and banded with red and light green. It has large purple interambulacral regions with undulating lavender lines, while the remainder of the epithelium is coloured olive or light brown. The purpose of the pigmentation, which is present in both the skin and skeleton, is also unknown, given the low light conditions of its habitat. One presented theory is that the species migrated from shallower waters and has maintained its colouring.

Immediately after its public introduction, the value of specimens for sale on eBay rocketed from $8 to $138. Coppard expressed concern that sea urchins like C. exquisitus could become endangered by sellers who abuse the insufficient regulatory protocols currently in place: 'The collection and sale of these urchins should be regulated and monitored; otherwise, we may decimate the populations before we know much more about it.' A similar event occurred in 2008 when a fossilised aphid encased in amber was purchased from eBay; the species was found to never have been described and was given the name Mindarus harringtoni after the buyer's name.

Reader's Guide

The significance of Coelopleurus exquisitus lies in its unusual discovery pathway and the conservation concerns it raises. The species was first identified from an eBay listing in 2004, highlighting how online marketplaces can serve as unexpected sources for taxonomic discovery. Its vibrant colouration—banded red and light green spines, purple interambulacral regions with lavender lines, and olive or light brown epithelium—makes it highly sought after by collectors, which may threaten the species. However, too little is known about the species to confirm their number. The purpose of the pigmentation, present in both skin and skeleton, remains unknown given the low light conditions of its deepwater habitat; one theory suggests the species migrated from shallower waters and retained its colouring. The rapid price increase from $8 to $138 after its formal description in Zootaxa on 7 August 2006 illustrates the commercial pressure on newly described species. Coppard's warning about insufficient regulatory protocols underscores the potential for overcollection before basic biological knowledge is obtained. The parallel case of the fossilised aphid Mindarus harringtoni, also discovered via eBay in 2008, reinforces the pattern of online commerce intersecting with taxonomy. The legacy of C. exquisitus is thus twofold: as a striking deepwater urchin and as a cautionary example of how market demand can outpace scientific understanding and conservation measures.

Did You Know?

• The species lives at depths between 240 and 520 m off New Caledonia.
• After its formal description, eBay prices rose from $8 to $138.