Costasiella kuroshimae, a rare species of sea slug. Photo: cri.cn

Red-lipped batfish (Ogcocephalus darwini)
Known for its bright red lips, it usually crawls on the ocean floor due to its poor swimming skills. Photo: xinhuanet.com

Flapjack octopus (Opisthoteuthis californiana)
This cute octopus is named after its two protuberant ‘ears’ sticking out from its head. Photo: xinhuanet.com

Mexican salamander (Axolotl)
This species is native to Mexico, and was placed on the critically endangered species list by IUCN in 2014. Photo: xinhuanet.com

Jorunna parva, another species of sea slug, is affectionately known as a “sea rabbit” because of its distinctive pair of bunny ears. Photo: huanqiu.com