#europeiskhummer

[thegrandimago]

Taken 2022 22nd January, this is a European lobster (Homarus gammarus), or Europeisk hummer, and molt @evolutionsmuseet being displayed. The live ones are blue, but preservation has faded the coloration. Sweden, they occur off the west coast at 15-50m depths, but will retreat to where there is hard substrate and plenty of crevices to hide away in. Like every decapod, it must moult its exoskeleton to grow, just like what happened to the one on the right, but the rate of molting decreases to 1-2 years once it's large, though it should be noted that mature males grow faster than their female counterparts because the they molt only every two years to prevent from losing the roe tucked in their swimmerets. They require a very specific water temperature range to operate. Below 5°C, it stops eating and goes dormant, but above 22°C, they will die. However, 15°C is when mating takes place. #animal #animals #djur #wildlife #natur #naturliv #nature #fauna #naturalhistory #naturhistoriska #preservedspecimen #arthropods #arthropod #kräftdjur #crustacean #crustaceans #lobster #lobsters #humrar #hummer #animalia #arthropoda #crustacea #malacostraca #decapoda #nephropidae #homarus #homarusgammarus #europeanlobster #europeiskhummer (at Evolutionsmuseet) https://www.instagram.com/p/CZ3Fm5HqMxa/?utm_medium=tumblr