The dolphins, whales and porpoises make up the Cetacean family.
A water lily belongs to the family Nymphaeaceae.
Symbion pandora belongs to the genus Symbion. This is a group of aquatic animals that live in the bodies of lobsters found in cold water.
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Their appearances are different and they belong to different species of plants. Water hyacinth belongs to a family called Pontederiaceae while water lily belongs to a family called Nymphaceae. Water lilies are not considered invasive but water hyacinth are.
They are all cetaceans, a special type of mammal that lives in water. Whales and porpoises are also cetaceans.
Water is not an element. It is a compound of Hydrogen and Oxygen.
Fish, amphibians and cetaceans (whales, dolphins, etc.) all are born in the water.
The botanical name of spinach is Spinacea oleracea. It belongs to family Chenopodiaceae.
A salamander belongs to the class Amphibia, which includes animals such as frogs and toads. They are characterized by their moist skin and the ability to live on land and in water.
Whales are one of the animals that can only live in salt water. Some others that only live in salt water include, salt water crocodiles, dolphins, and some types of turtles.
Thulium belongs to the Lanthanide family. Thulium is a silvery metal, so soft it can be cut with a knife. Thulium is stable in air, but reacts slowly with water, and rapidly with acids.
The ancestors of cetaceans began to move into the water and develop aquatic characteristics about 50 million years ago. They have been evolving ever since, gradually becoming more and more aquatic. Today's cetaceans live entirely in water. The ancestors of pinnipeds began moving into water much more recently, about 23 million years ago. Because of this, modern pinnipeds are not as fully aquatic as cetaceans. The ancestors of sirenians began moving into the water about 40 million years ago, and have been evolving since then.