Why can't the marine iguanas spend long periods of time playing and feeding in the ocean water?
they lose body temperature
they get too tired
they are not very good swimmers
they cannot withstand the salt

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds