Fauna of Australia species are nocturnal and many arboreal. Two of the five living species of monotreme occur in Australia: the platypus and the short-beaked echidna. The monotremes differ from other mammals in their methods of reproduction; in particular, they lay eggs instead of giving birth to live young. The platypus—a venomous, egg-laying, duck-billed amphibious mammal—is considered to be one of the strangest creatures in the animal kingdom. When it was first presented by Joseph Banks to English naturalists it was thought to be so strange that it was a cleverly created hoax. The short-beaked echidna is similarly strange, covered in hairy spikes
The Marine Mammal Center of survivability for all patients, species combined. In the spring of 2013, environmental conditions limited to Southern California resulted in a higher than normal number of sea lion strandings. During this period, the Marine Mammal Center has taken in the overflow, approximately 65 patients. The Marine Mammal Center began in 1975 with bath tubs and small pools surrounded by a fence. In June, 2009 a multi-facility complex was opened to hold both the animals and the staff. It was built with recycled materials and utilizes sound boards made of sea weed. Donated solar panels provide approximately 20% of the facilities