Nudibranch (Indonesia). This unusual "nudi" is apparently very rare. Not only have I never seen another one like it, but several nudi experts say they never have, either. Note its external gills in a flowery formation at the top (the nudi's rear).
Dolphins in sunlight (Socorro, Mexico).
Jellyfish Lake (Palau, Micronesia). This photo of an old film photo isn't top qualify, but gives a good look at the softball-sized jellyfish that live in this land-locked lake high up on an island. These jellyfish have no sting, but instead "farm" algae on their tendrils.
