A twitching eye can be one sign of stress, especially when it is related to vision problems such as eye strain (see below). Reducing the cause of the stress can help make the twitching stop. Tiredness: A lack of sleep, whether because of stress or some other reason, can trigger a twitching eyelid.ye strain: Vision-related stress can occur if, for instance, you need glasses or a change of glasses. Your eyes may be working too hard, triggering eyelid twitching. Computer eye strain from overuse of computers, tablets and smartphones is also a very common cause of vision-related stress.
Food Preferences And Resources. 1  Walruses prefer molluscs - mainly bivalves such as clams. They also eat many other kinds of benthic invertebrates including worms, gastropods, cephalopods, crustaceans, sea cucumbers, and other soft-bodied animals. 2  Walruses may eat the carcasses of young seals when food is scarce.
1 Depending upon their location, they also eat harp and hooded seals and scavenge on carcasses of beluga whales, walruses, narwhals, and bowhead whales.  that have hauled out onto the ice. On occasion, polar bears kill beluga whales and young walruses.