When seals dive hundreds of metres deep, they have to survive on the oxygen they breathed in above the surface. They can store large amounts in their blood and muscles. Oxygen is also conserved by a lower heart rate and reduced blood flow to parts of the body.
Using this item
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.
Add new comment