Fertilized capelin eggs were collected during low tide at the
spawning site (69◦ 13 N, 19◦ 19 E) in Balsfjord, northern Norway
on the 16 April 2010. Eggs attached to gravel and macro algae
(Fucus sp.) were transported on ice to the Barents Ecotox Laboratory,
Tromsø where they were placed in particle-filtered (60 m)
and UV treated running seawater of ambient temperature (4.5 ◦C)
until the start of the experiments. One crude oil experiment and
one pyrene experiment were performed in the period 20 April–21
May 2010.