HP Hartmann added the lesson Personal or Team Magic Number to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson Why the Rule of Thirds to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson General Rules to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson to the elearning Ahn I Jun in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson to the elearning Ahn I Jun in the group Basic Side Mount Open Water Diver