A species faces extinction in a forbidding, frozen landscape in “Somber Tides,” a short film that expresses the desperation and tenderness necessary for survival. On dramatic snowy seaside cliffs and ice floes, through blustering blizzards and relentless tides, members of the species grasp to life. Birdlike gestures and writhing exchanges evoke the instinctual dances of mating, combat, and migration, culminating in one final cry from a species in crisis.
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