From the team that brought us The Secret Life of Plankton and The Plankton Chronicles comes this wonderful TEDEd video from their amazing microscopic footage, re-created to explain How Life Begins in the Deep Ocean:

Where do squid, jellyfish and other sea creatures begin life? The story of a sea urchin reveals a stunningly beautiful saga of fertilization, development and growth in the ocean depths.

from TEDEd.

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