Tree climbing crab moving slowly in mud mound in a mangrove area in Singapore - full body side view shot

tree climbing crab adult crustacean vinegar crab side view habitat terrestrial species scavenger burrowing pests mud wildlife shell animal full body creature mound closeup asia national geographic resting mangrove nature lobster common fauna outside singapore native outdoor area marine wild aquatic terrifying moving widespread shot slowly wetlands behavior forest motion leafeaters park blue color rainforest domestic