Something very important to consider is that most of these terms we use are either latin or greek based. Latin is generally very similiar to English, however there are significantly fewer ways to pronounce sounds than in English.
In these cases, all rules are absolute and there are no exceptions as to pronounciation.
To start with some of the basics, 'th' is always going to be hard, like Tim or Take. The 'ae' is always going to be hard, such as Time. The letter 'c' is also always going to be hard, like in Cat or Car. 'ch' is going to be pronounced as a 'K' sound, like in
[hr]
E-brank (not
[hr]
E-branch, pronounced like you would say a tree branch) or 'Konk'. 'Zo' or 'Zoo' is usually pronounced as a 'Zoe' sound.
I give credit to 'Bonsai Nut' for supplying all of his knowledge elsewhere dealing with some breif latin pronounciation.
A few of the short vowels include:
'A' as in Apex
'E' as in Met
'I' as in Hint
'O' as in Offer
'U' as in foot.
Some of the long vowels would include:
'A' as in Daily
'E' as in Gate
'I' as in Eat
'O' as in Occasion
'U' as in 'Food'
If a word has only two syllables, the accent will go with the first syllable (Like SEE-bye). However, If a word has more than two syllables, the accent will go with the second to last syllable only if the second to last syllable contains a long or short vowel followed by a consonant, otherwise the accent would go with the third to last syllable.
With all that said,
Zooxanthellae would be pronounced 'Zoh-uh-zan-TAY-lee', although I've heard many 'experts' pronounced this as 'Zoo-Zan-THELL-e'
Crocea would be pronounced 'Krow-KAY-ah'
Acropora would be pronounced 'Ah-crop-OR-ah' or 'Ack-row-POUR-ah.'
Sebae would be pronounced 'SEE-Bye'
Aiptasia would be pronouced 'Ape-tay-SHE-ah'
Percula would be pronounced as 'Per-COO-la.'
...I won't even try to pronounce Astroceoniidae, Pseudosiderastrea, or Trachyphylliidae
Graham