Your Weekly Laudato Si’: 12/12

“Carbon dioxide pollution increases the acidification of the oceans and compromises the marine food chain.” (25)


Ocean acidification is the ongoing decline of the pH level of the Earth’s oceans, caused by the ocean’s absorption of carbon dioxide from the atmosphere. Ocean acidification has been shown to significantly reduce the ability of reef-building corals to produce their skeletons. Roughly one-quarter of coral reefs worldwide are already considered damaged beyond repair, with another two-thirds under serious threat. The coral reef structure buffers shorelines against waves, storms, and floods, helping to prevent loss of life, property damage, and erosion.

Ocean acidification will affect the food we eat since most of our shellfish requires calcium carbonate to form or to fortify their shells.  Many of the fish we eat are also dependent on shelled animals for their food source, so the entire food chain is in jeopardy.


1. Psalm 104 is an awesome praise of God the creator. In verses 24-25, the psalmist sees the oceans as reflecting the fathomless mystery of God:

“How varied are your works, Lord!

In wisdom you have made them all;

the earth is full of your creatures.

There is the sea, great and wide!

It teems with countless beings,

living things both large and small.

There ships ply their course

and Leviathan, whom you formed to play with.”

2. Many fishermen and other seafaring people experience the effects of climate change in a very direct way, wether that be from loss of livelihood or extreme weather events:

Traditional Prayer for Fishermen and Those Who Travel by Sea

Also, St. Andrew is the patron saint of fishermen and seafarers.


• Take your kids to see a coral reef in the ocean, or in an aquarium. If that is not a possibility, watch this amazing video with them:

• The Nature Conservancy has ten ways you can help protect our great barrier reefs.