Interesting discussion.
It is a good idea to pull yourself along a wreck. I've never found it necessary to kill creatures in the process, but hand pulls on a wreck in current is sometimes necessary and finger pulls inside a wreck is a great way to avoid a silt out.
Touching critters is a different issue. There is no right or wrong blanket method. There are lots of creatures you can touch which does no harm to the animal or to the diver. I touch them frequently. Touching others will hurt you or the animal. Sometimes how or where you touch can cause harm. If you aren't sure, don't touch.
Octopus is like fish. One fish, two fish, red fish, blue fish. Octopus, like fish is singular and plural. Multiple species becomes fishes and octopuses. Octopi is an acceptable (but not preferred) alternative. Octopi came into use because octopuses sounds funny. OTOH, octopuses is much more fun to say. Live a little, drop octopi from you vocabulary and use octopuses.
It is a good idea to pull yourself along a wreck. I've never found it necessary to kill creatures in the process, but hand pulls on a wreck in current is sometimes necessary and finger pulls inside a wreck is a great way to avoid a silt out.
Touching critters is a different issue. There is no right or wrong blanket method. There are lots of creatures you can touch which does no harm to the animal or to the diver. I touch them frequently. Touching others will hurt you or the animal. Sometimes how or where you touch can cause harm. If you aren't sure, don't touch.
Octopus is like fish. One fish, two fish, red fish, blue fish. Octopus, like fish is singular and plural. Multiple species becomes fishes and octopuses. Octopi is an acceptable (but not preferred) alternative. Octopi came into use because octopuses sounds funny. OTOH, octopuses is much more fun to say. Live a little, drop octopi from you vocabulary and use octopuses.