Marine animals have diverse life cycles depending on their species and ecological niche. Here are some common life cycle patterns observed in marine animals:

Oviparous – Producing young by means of eggs which are hatched after they have been laid by the parent.

Viviparous- Give birth to live young.

Ovoviviparous – Once the egg hatches, it remains inside the mother for a period of time

Metamorphosis

Change of physical form, structure, or substance.