[NEEDS INPUT] [IL] Conservationist Career: Can't survey wildlife at waterfall

I play in english, but when you get the work task to survey wildlife, the tooltip on the task specifically lists the waterfall as an option, but if you go to the waterfall there is no option to do so. Here is a screenshot https://imgur.com/a/jvuSSM4

The pictures are very helpful. My first thought was that the task to 'survey' might be unlocked at the next career level. Then I realized you had completed two of the three actions of that task. Did you try taking a sample at the waterfall?

No, it doesn't work. I have gotten a task on a different day to take samples from the waterfall, so it's a separate action. 

Luckily survey does appear in all the other places listed, so it doesn't prevent you from completing the daily task. It's more of a minor annoyance than game breaking.

Conservator's nature career has a bug. Tasks to do at home are not adopted to sim career level. Similarly as in the career of a scientist. However, in the career of a scientist, you had several tasks to choose from. You were able to advance if only a few were completed. Theoretically, there are no similar such tasks in the conservator's career. However, this problem can be dealt with in two ways. One way depends on the player. If he sends out research data to the Institute, he will increase his career level. The second way depends on EA. If the "send data to Institute" is added to the to-do at home list, players will stop getting nervous when the task once again completed will not be approved by the game or if he does not have such an option in the game as above.

Data can be obtained by probing for example plants in the garden of the sim.

Confirmation and observation. The Conservationist career does indeed have a bug. Not all of the work tasks are available options. In this case specifically the option to "survey" the waterfall.
I tested the career in a totally vanilla folder with a newly created Sim. Moved him into Caldera Camp in Mua Pel'am area of Sulani and had him join the Conservationist career.
He was promoted to level 2 on his second day of work. The option to survey was available at the waterfall. I took pictures to show the options etc and saved the game. The interesting part of this experiment was discovering the "survey" option would come and go for no apparent reason. There is no obvious trigger to make the option appear/disappear. I routinely repair and delete the localthumbcache.package and any other cache files.

Game Version 1.52.100.1020
All content installed thru Island Living.
PC / Win 7
Never used CC or mods.

Ok, this is a weird one @dnmartyn but try the attract frogs interaction first, then the survey option might pop up.  I've used that and had the option pop up without fail even though the survey option isn't there at the start for me either.

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@verfens wrote:

Ok, this is a weird one @dnmartyn but try the attract frogs interaction first, then the survey option might pop up.  I've used that and had the option pop up without fail even though the survey option isn't there at the start for me either.

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By jove @verfens  I do believe you have found the magic combination!
The "survey" action is not there until I used the attract frogs interaction.
Now I attract frogs and then can survey every single time.
Thank you for that important observation.