Hop off odd crate at a port (7)

'port' is the definition.
I know nothing about this answer so I can't judge whether this works.

'hop off odd crate at a' is the wordplay.
'off' indicates anagramming the letters.
'odd' means one should take alternating letters.
'at' means one lot of letters go next to another.
The alternating letters of 'crate' are 'cae'.
'hop' with letters rearranged gives 'pho'.
'pho'+'cae'+'a'='PHOCAEA'

Can you help me to learn more?