Jonathan Wilker : What sticky sea creatures can teach us about making glue

Jonathan Wilker at TEDxPurdueU  (transcript)
What sticky sea creatures can teach us about making glue
Summary
I thought that I was very sorry to the speaker because Japanese people probably thought that sea creatures are food, how those are cooked is the best, and how those have a taste.
First, I didn't know what rocks in the picture were covered, furthermore, l had forgotten what name of shellfish is called in English completely.

In the story, sticky sea creatures are shellfish and mussels, oysters and barnacles appear. They produce the adhesive to protect themselves and their babies from predators and nature by cementing to each other on rocks.
In fact, not only protecting themselves from nature but also they really help the cycle of sea systems. Reef and other small creatures at the coast are protected by sticking shellfish on rocks. The speaker tells us what they do is filtering the water, holding sand and dirt in place, letting small creatures stay and so on. He suggests that the substance that they produce in nature must be really healthy and natural. It must change our chemical and non-recycle systems. There are still many things that we have to learn from nature.

Words in this story
symbiosis /noun/ paragenesis
degradable /ask/ able to be humiliated, able to be broken down (Chemistry)