Should we welcome them? The great white is the most fearsome of all sharks, and the waters off Devon and Cornwall are perfect habitats for it. Some believe it may be here already.
Warming sea lures great white sharks to UK

Glossary
Ominous - Menacing or threatening.
Peninsula - A piece of land that sticks out from a larger area and is mostly surrounded by water.
Mean - The mathematical average of two or more numbers.