A person who subsists by cheating or robbing sailors on shore; a land-pirate.(noun)
A land-grabber; one who seizes upon land by force or chicanery.(noun)
The Century Dictionary (Public Domain)
Use "land-shark" in a sentence
"The world will always have more imitators than innovators, which is a truly sad state of affairs; especially when the land-shark imitators swim in to take a fatal bite out of the innovator (ie Walmart, Microsoft, Starbucks, Hilton, insert oppressive corporate Goliath of choice here)."
"But the foreign land-shark, and the corporate land-shark, dwindle into insignificance by the side of the individual land-shark."
"The British land-shark, having got his hold upon the soil, possesses the place to stand for which the Greek sighed in vain, and no man will say he does not move the world; and he will continue to moveit until such time as the world shall movehim."