“An egg case or egg capsule, colloquially known as a mermaid's purse or devil's purse, is a casing that surrounds the fertilized eggs of some sharks, skates, and chimaeras”. – Wikipedia. Photo: OBX Skate (Raja eglanteria) Egg Case – Mermaid's Purse. (Photo by altereye1)

A woman with Kimono looks at cherry trees in bloom in Shinjuku Gyoen in Tokyo, Japan on Thursday, April 4, 2024. (Photo by Noriko Hayashi for The Washington Post)

Santas trained by Ministry Of Fun's Santa School attend a taste test of Iceland's Luxury Mince Pies in London on November 24, 2024. (Photo by Jack Hall/PA Media Assignments)

Engine driver Josef Kowatsch (top L) steers a train through the NEAT Gotthard Base Tunnel during a media visit near the town of Erstfeld August 24, 2015. Crossing the Alps, the world's longest train tunnel should become operational at the end of 2016, consisting of two parallel single track tunnels, each of a length of 57 km (35 miles). (Photo by Arnd Wiegmann/Reuters)

Veteran racehorse Morestead models the world's first authentic Harris Tweed suit designed for a racing horse, which has been specially commissioned by William Hill to celebrate the opening of this year's Cheltenham Festival on March 15, 2016 in the U.K. (Photo by Joe Pepler/Rex Features/Shutterstock)

Alex Lual (R) in action against Trent Girdham (L) during the undercard bouts ahead of the WBO Asia Pacific Super Welterweight Title Bout between Tim Tszyu and Takeshi Inoue at Qudos Bank Arena, in Sydney, New South Wales, Australia, 17 November 2021. (Photo by Dan Himbrechts/EPA/EFE)

Semi-feral, conservation ponies, graze on the salt marsh's of Gower, Swansea, Wales, United Kingdom on September 7, 2022. (Photo by Joann Randles/Cover Images)

N.C. Dezendorf, wife of the general manager of the Electro-Motive division of General Motors, christens the new lightweight “Aerotrain” at the company's locomotive works in La Grange, Ill. on August 22, 1955. (Photo by Edward Kitch/AP Photo)