Seals, from Pole to Pole

Clumsy on land, seals turn out to be talented swimmers and true diving champions! Seal populations are spread across many global areas, ranging from polar waters to Mediterranean shores. While some species thrive today, others face new threats that lead to protection actions and studies. Diversity of seal species The ringed seal (Pusa hispida), the […]

Clumsy on land, seals turn out to be talented swimmers and true diving champions! Seal populations are spread across many global areas, ranging from polar waters to Mediterranean shores. While some species thrive today, others face new threats that lead to protection actions and studies.

Seal Diving 1
Harbor seals on the sandbanks of Berk-sur-Mer. In the bay of Somme, they share the area with gray seals. © Gilles Martin

Diversity of seal species

The ringed seal (Pusa hispida), the smallest, is barely 1.20 meters long. Conversely, the elephant seal (Mirounga leonina) has males often exceeding 2 tons. Among the fascinating species are the hooded seal (Cystophora cristata), with its facial protuberance, or the formidable leopard seal (Hydrurga leptonyx) and its mane of sharp teeth.

There are 18 species of seals, classified into 4 subfamilies, which help to understand their distribution:

  • Phocines : Seals of the northern hemisphere, mainly in Arctic areas. Some species also inhabit the French (English Channel and North Atlantic) and Belgian coasts.
  • Lobodontines : Located along the Antarctic coasts, they also prefer cold waters.
  • Monachines : Also known as monk seals, they inhabit tropical and subtropical waters. The Caribbean monk seal (Monachus tropicalis) has been extinct since 1950. There are two endangered species left: the Hawaiian monk seal (Monachus schauinslandi) and the Mediterranean monk seal (Monachus monachus).
  • Eystophorines : This family is characterized by males with a protuberance, crest, or trunk on their head.
Seal Diving 2
Even the leopard seal, with its imposing size, demonstrates great agility once submerged. © Eric Lecoedic


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