Which of the following sentences uses CORRECT punctuation?

A. Sharks are considered dangerous predators, however, a deep-sea diver says sharks can be playful creatures, too.
B. Sharks are considered dangerous predators; however, a deep-sea diver says sharks can be playful creatures, too.
C. Sharks are considered dangerous predators, however; a deep-sea diver says sharks can be playful creatures, too.

B. Sharks are considered dangerous predators; however, a deep-sea diver says sharks can be playful creatures, too.