Misc: This is the hardest naturally occurring substance?

Questions

What type of fish of the ocean which is 15ft long and has plumes?

What sea creature squirts water from both holes when alarmed?

Often seen on warning signs, what two words are combined for form the term ‘Hazmat”?

In literature, which French Physician wrote the book of rhyming prophesies titled ‘Centuries”?

Which magazine was founded by John F. Kennedy Jr. in 1995?