This image gave me a feeling that they hid their head to share a secret. I thought their bodies stood out well in Black and White.
Do let me know if this composition works for you... I wanted this with the bare 300 f4 but was a bit unsure of changing the TC on elephant back hence let it be.
This is full frame.
Comments and critiques welcome...
Canon EOS 1000D, Canon EF 300mm f/4L IS USM + 1.4x TC