Thomas Alan Stephenson was a British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 marine biologist

Marine biology

Marine biology is the scientific study of organisms in the ocean or other marine or brackish bodies of water. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather...

, specialising in sea anemone

Sea anemone

Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria; they are named after the anemone, a terrestrial flower. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Zoantharia. Anthozoa often have large polyps that allow for digestion of larger...

s.

He was born at Burnham-on-Sea

Burnham-on-Sea

Burnham-on-Sea is a town in Somerset, England, at the mouth of the River Parrett and Bridgwater Bay. Burnham was a small village until the late 18th century, when it began to grow because of its popularity as a seaside resort. It forms part of the parish of Burnham-on-Sea and Highbridge...

, the son of a minister

Minister of religion

In Christian churches, a minister is someone who is authorized by a church or religious organization to perform functions such as teaching of beliefs; leading services such as weddings, baptisms or funerals; or otherwise providing spiritual guidance to the community...

 and amateur botanist

Botany

Botany, plant science, or plant biology is a branch of biology that involves the scientific study of plant life. Traditionally, botany also included the study of fungi, algae and viruses...

. He soon developed an interest in natural history

Natural history

Natural history is the scientific research of plants or animals, leaning more towards observational rather than experimental methods of study, and encompasses more research published in magazines than in academic journals. Grouped among the natural sciences, natural history is the systematic study...

 and went to study at University College, Aberystwyth

University of Wales, Aberystwyth

Aberystwyth University is a university located in Aberystwyth, Wales. Aberystwyth was a founding Member Institution of the former federal University of Wales. As of late 2006, the university had over 12,000 students spread across seventeen academic departments.The university was founded in 1872 as...

. He began to study the local sea anemones there, but had to abandon his studies because of illness. Despite not completing his degree, he was made a staff member and was later awarded a doctorate

Doctorate

A doctorate is an academic degree or professional degree that in most countries refers to a class of degrees which qualify the holder to teach in a specific field, A doctorate is an academic degree or professional degree that in most countries refers to a class of degrees which qualify the holder...

 for the body of work that he had produced.

Stephenson held a number of academic posts in Britain, and at the University of Cape Town

University of Cape Town

The University of Cape Town is a public research university located in Cape Town in the Western Cape province of South Africa. UCT was founded in 1829 as the South African College, and is the oldest university in South Africa and the second oldest extant university in Africa.-History:The roots of...

, South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

. Significantly, his final position was that of Professor and Head of the Department of Zoology at the University College of wales, Aberystwyth.