Dear all, I am a student in fourht year Zoology and am currently engaged in a project studying albacore tuna migrations. I am hoping to use laser ablation to study oxygen isotopes of their dorsal spines. They lay down incremental layers in these spines every year in the same fashion as a tree. I am hoping to determine water temperatures for different years and thus showing that they are moveing around a great deal. Howevr i have not got the first clue when it comes to laser ablation, how it really works, how i would analyse my results, what my results would look like plus a thousand pther unknowns about it. I am appealing to anyone who might know of any good material out there i could read that would give me a good start on the subject. The material i have read to date has been a little too much too soon for me to digest. Anyone out there involved in any studies comparable to mine, i would appreciate any help or criticism you might have to offer. Kind regards, Tighearnach