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Life at the Poles

How these connect

Ringed Seal (Pusa hispida) and what it relates to. Every line is an evidence-backed relation, and the arrangement is fixed — this address draws this picture, today and next year.

depends_on — Juveniles shelter and feed at the underside of the ice and in its cracks, which makes the ice a nursery rather than merely a cover.depends_on — The bear hunts from the surface of the ice; where and when the ice is absent it cannot reach seals at all, which is why the IUCN identifies sea-ice loss as the principal threat to the species.preys_on — The ringed seal is the polar bear's principal prey across most of its range, taken at breathing holes and by breaking into birth lairs.depends_on — It maintains breathing holes through thick fast ice with its foreflipper claws and pups in a lair excavated in the snow drift above the hole; both stable ice and sufficient snow are required.preys_on — Arctic cod is the principal energy transfer from ice-associated invertebrate production to seals and seabirds in much of the Arctic.Sea IceSea IceArctic Cod / Polar Cod (Boreogadus saida)Arctic Cod / Polar Cod (B…Polar Bear (Ursus maritimus)Polar Bear (Ursus maritim…Ringed Seal (Pusa hispida)Ringed Seal (Pusa hispida)
4 drawn · 9 reachable and not drawn · positions derived from object ids, never from a simulation
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Every relation drawn, in words5
  1. Arctic Cod / Polar Cod (Boreogadus saida) · depends_on · Sea Ice

    Juveniles shelter and feed at the underside of the ice and in its cracks, which makes the ice a nursery rather than merely a cover.

  2. Polar Bear (Ursus maritimus) · depends_on · Sea Ice

    The bear hunts from the surface of the ice; where and when the ice is absent it cannot reach seals at all, which is why the IUCN identifies sea-ice loss as the principal threat to the species.

  3. Polar Bear (Ursus maritimus) · preys_on · Ringed Seal (Pusa hispida)

    The ringed seal is the polar bear's principal prey across most of its range, taken at breathing holes and by breaking into birth lairs.

  4. Ringed Seal (Pusa hispida) · depends_on · Sea Ice

    It maintains breathing holes through thick fast ice with its foreflipper claws and pups in a lair excavated in the snow drift above the hole; both stable ice and sufficient snow are required.

  5. Ringed Seal (Pusa hispida) · preys_on · Arctic Cod / Polar Cod (Boreogadus saida)

    Arctic cod is the principal energy transfer from ice-associated invertebrate production to seals and seabirds in much of the Arctic.