Table 5. Effect of Toxicant and Toxicant Concentration 
on Larvae of Haliotis Rufescens 
Effect” of Following Toxicants 
for Indicated Times -- 
Exposure 
Time Methoxychlor/ 
(heen) TBTO TBTO/Creosote Eee 0 
It It + + 
I+ 
no visible effect 
live, most immobile 
cellular disassociation or abnormal development 
dead 
ot lt + 
nou owe ot 
21 
