seël

v. sew up the eyelids of falcons or hawks to make it tame; blind

is one of fictional species of the Pokémon franchise. The name Seel is probably a deliberate misspelling of the word seal, regarding its seal-like form. In the Advance Generation, a similar Pokémon was created, Spheal, though the latter is more rotund in physique and has a notably different color.
See more at Wikipedia.org...

Verb
1. sew up the eyelids of hawks and falcons
(hypernym) blind
(classification) falconry

(v. t.)
To close the eyes of (a hawk or other bird) by drawing through the lids threads which were fastened over the head.
  

(v. t.)
Hence, to shut or close, as the eyes; to blind.
  

(v. i.)
To incline to one side; to lean; to roll, as a ship at sea.
  

(n.)
Time; season; as, hay seel.
  

(n.)
Good fortune; favorable opportunity; prosperity. [Obs.] "So have I seel".
  

(n.)
Alt. of Seeling
  

mark