Norbert Wu / Giant Nudibranch (Dendronotus iris) attacking Tube-dwelling Anemone (Pachycerianthus fimbriatus) eating tentacles, Monterey, California, sequence 3 of 3

Norbert Wu / Giant Nudibranch (Dendronotus iris) attacking Tube-dwelling Anemone (Pachycerianthus fimbriatus) eating tentacles, Monterey, California, sequence 2 of 3

Norbert Wu / Giant Nudibranch (Dendronotus iris) attacking Tube-dwelling Anemone (Pachycerianthus fimbriatus) eating tentacles, Monterey, California, sequence 1 of 3

Fred Bavendam / Giant Nudibranch (Dendronotus iris) attacking a Tube-dwelling Anemone (Pachycerianthus fimbriatus), Vancouver Island, British Columbia, Canada. Sequence 3 of 5

Fred Bavendam / Giant Nudibranch (Dendronotus iris) attacking a Tube-dwelling Anemone (Pachycerianthus fimbriatus), Vancouver Island, British Columbia, Canada. Sequence 5 of 5

Fred Bavendam / Giant Nudibranch (Dendronotus iris) attacking a Tube-dwelling Anemone (Pachycerianthus fimbriatus), Vancouver Island, British Columbia, Canada. Sequence 2 of 5

Fred Bavendam / Giant Nudibranch (Dendronotus iris) attacking a Tube-dwelling Anemone (Pachycerianthus fimbriatus), Vancouver Island, British Columbia, Canada. Sequence 1 of 5

Fred Bavendam / Giant Nudibranch (Dendronotus iris) attacking a Tube-dwelling Anemone (Pachycerianthus fimbriatus), Vancouver Island, British Columbia, Canada

Fred Bavendam / Giant Nudibranch (Dendronotus iris) attacking a Tube-dwelling Anemone (Pachycerianthus fimbriatus), Vancouver Island, British Columbia, Canada

David Hall / Frond eolis nudibranch (Dendronotus frondosus) preying upon stalked colonial hydroids, Bass Harbor, Maine, USA, Atlantic Ocean.

Franco Banfi / Bushy backed sea slug (Dendronotus frondosus) crawling over kelp, Trondheimfjord, Norway, North Atlantic Ocean.

Shane Gross / Giant nudibranch (Dendronotus iris) on kelp frond, Vancouver Island, British Columbia, Canada, Pacific Ocean.