Ladoga seal is one of the three subspecies of the ringed seal
inhabiting Baltic catchment area, with the other two be Baltic ringed seal
(Ph. hispida botnica Nordq.) and Saimaa seal (Ph. hispida saimensis
Ladoga seal is the smallest of all ringed seal subspecies.
Ladoga seal live normally 30-35 years.
Ladoga seal reaches sexual maturity when 6-7 years old.
Ladoga seal deliver offspring in February-March, and nurses the young seals for 1.5-2 months.
Ladoga seal moults annually from April to June (with the peak in mid-April - early May), and during this period the animals are less careful and hence most vulnerable.