A worldview is a philosophy that shapes one's general view of the world. One's worldview is the basic, influential point of view that a person has regarding everything. Many worldviews are related to theology.
A major component of worldviews is origins. Where we believe we came from (e.g. created by God or the result of random accidents) can strongly influence our views.
Whilst worldviews may be nominally tied to particular religions, an individual's worldview might include aspects of more than one typical worldview. For example, many Christians, whilst nominally having a biblical worldview, also adopt some aspects of an atheistic worldview in believing that evolution occurred.
The Biblical worldview is based on the premise that the Bible is factually accurate.
Worldviews influence opinions on a wide variety of issues. For example, on the matter of sharks attacking swimmers, a person who holds either an naturalistic or a pantheistic worldview would argue that the humans are entering the shark's domain and therefore the sharks should not be punished for attacking humans, whereas a Christian holding a biblical worldview would argue on the basis of Genesis 1:28 that all of creation is mankind's domain and that humans are to subdue it and rule over it. Such differences will affect the way that different people respond to events, argue for or against particular issues, or even what laws will be passed.