Burmese confused over initially suggesting - is Bury under water? (8)

'bury under water?' is the definition.
'submerse' can be an answer for 'bury' (thesaurus). I am not sure about the 'under water?' bit.

'burmese confused over initially suggesting' is the wordplay.
'confused' indicates an anagram.
'over' indicates putting letters inside.
'initially' suggests taking the first letters.
The first letter of 'suggesting' is 's'.
'burmese' anagrammed gives 'submere'.
'submere' placed around 's' is 'SUBMERSE'.

'is' is the link.

Can you help me to learn more?