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Male pregnancy evolved in these species to increase reproductive success. By shifting gestation to males, females can produce ...

Seahorses mate for life, but it’s the father that becomes “pregnant.” Seahorse fathers will carry the eggs in a special brood pouch for up to four weeks before giving birth. Depending on the ...

Male seahorses not only become pregnant and give birth, but do so in ways that take different forms, which make them unique research subjects to understand the evolution of pregnancy, according to Dr.