We have to keep the sea otters around as they are the main predator of sea urchins. With sea otters in the area kelp is able to produce twelve times the amount of oxygen then if sea otters weren't there. Why is this its because the sea otters will kill the sea urchins before they can kill the kelp which inturn allows for more production of oxygen through photosynthesis.
The amount of oxygen made by these kelp forests is huge. On the carbon exchange it is worth between 200 million and 400 million dollars.
Just to say some facts. northern sea otters weigh around 100 lbs. They are also able to eat 25% of their body weight in a day. So if we get the weight of sea urchins, which is around 1 pound, we can see that the sea otters can eat about 25 sea urchins a day.
The amount of oxygen made by these kelp forests is huge. On the carbon exchange it is worth between 200 million and 400 million dollars.
Just to say some facts. northern sea otters weigh around 100 lbs. They are also able to eat 25% of their body weight in a day. So if we get the weight of sea urchins, which is around 1 pound, we can see that the sea otters can eat about 25 sea urchins a day.