Leafy sea dragon is a fascinating relative of seahorses. They can be found in warm waters of Australia’s oceans using their leaf-like body parts they can stay in disguise in seaweed and kelp. They eat plankton and small crustaceans, during the mating season male sea dragons look after the eggs until they hatch. But there is also a challenge for this marvellous creatures. Even though Australian government has put complete protection on this species their population is decreasing due to water pollution and people collecting them for aquariums. Newborns are equipped with enough yolk to live for two to three days. Once they deploy all of the yolk they have to find food on their own. Sea dragons at birth are 2 cm in length but by the year they can grow up to 20 cm.
Blue whale has evolved to its current form few millions years ago and from that time it holds the record of being the biggest known to humans animal that has ever existed on earth. It can grow up to 30 meters in length and can weight as much as 200 tons. Recognizable by their bluish-gray colour, blue whales are filter feeders, they sew tons of water every day to capture krill which is their primary food source. Even though they have colossal size, blue whales are known as peaceful animals which often engage in small family groups. Unfortunately due to massive hunting in the past their population was reduced. But conservations efforts has led to recoveries and know number of blue whales is bigger.