Brb staring at illustrations of marine invertebrates forever 😍 Repost biodivlibrary: Sea urchins are spiny animals in the class Echinoidea. They inhabit all oceans and feed primarily on algae. Explore sea urchins collected during the Danish "Ingolf" Expedition in 1895 and 1896 in Th. Mortensen's volume on the Echinoidea for the Expedition Report. #SciArt drawn and lithographed by Mr. Bentzen-Bilkvist. ⁣ ⁣ Depicted species include: Fig. 1: Stylocidaris affinis; Figs. 2-3: Gracilechinus elegans; Figs. 4 & 8: Gracilechinus acutus norvegicus; Fig. 5-6: Strongylocentrotus droebachiensis; Fig. 7: Echinus acutus; Fig. 9: Echinus esculentus.⁣ ⁣ Contributed in #BHLib by #MBLWHOI Library affiliated with mblwoodshole and woodshole_ocean. Direct page link: s.si.edu/2Po1uVm.⁣ ⁣ #StylocidarisAffinis #GracilechinusElegans #GracilechinusAcutusNorvegicus #StrongylocentrotusDroebachiensis #Echinoderm #EchinusAcutus #EchinusEsculentus #MarineInvertebrates #BiodiversityHeritageLibrary #Biodivers...