Page 132 - The Miracle of Migration in Animals

Migrations of

Marine Fish

The diverse species of
fish living in the seas make
journeys of various lengths.
From the little rockfish to

larger tuna to whales
weighing tons, all have dif-
ferent ways of migrating.
Some migrate to sources of
food, others to reach a suit-
able breeding ground, and
still others to escape harsh
weather conditions.
In comparison with
the changing conditions on
land, one might assume that
regular movements of tides
and ocean waves provide
more constantly reliable
conditions for navigation.

But in the depths of the sea,
the movements and changes
are even more radical than
on land and more difficult
to observe and understand.
In spite of these difficulties,
still marine fish manage to
migrate.

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