Wiktionary(0.00 / 0 votes)Rate this definition: upthrust(Noun) an upward thrust. upthrust(Noun) buoyancy. upthrust(Noun) an upward movement of part of the Earth's crust. upthrust(Verb) to thrust something upwards.
Predators, Food and Feeding: Natural predators of winter flounder include sharks, oyster toadfish, summer flounder, striped bass, monkfish and spiny dogfish. When feeding, a winter flounder will lie motionless, partly concealed on the bottom, with its head raised off the bottom, braced by the dorsal fin.
Quick Answer. A walrus eats mainly mollusks, such as clams. A walrus also eats shrimp, crab, worms, sea cucumbers and coral. Occasionally, a walrus has been known to eat the carcasses of seals when it cannot find food. Continue Reading.