Aia nā holoholona moana i nā ʻano holoholona a pau e noho nui ana i loko o ke kai. No laila, aia nā iʻa, nā hōkū, nā pāpaʻi, nā ʻū, nā iʻa, nā ʻōhuʻu, a me nā mea hou aku. Nui nā manu kai, ʻoi aku ka nui o nā penguins, akā ʻo nā manu kuhukukū kai noho nui i loko a kokoke paha i ke kai, akā waiho i kā lākou mau hua ma ka ʻāina. Hānau nā makuahine sila i kā lākou keiki ma ka ʻāina. Ua manaʻo ʻia kēia mau holoholona a pau i nā holoholona moana.
Manaʻo ka manaʻo o ka evolution e ola nā holoholona mua a pau i ke kai. Nui ka poʻe i hele i uka a hoʻomohala i laila. Akā, aia kekahi mau holoholona i neʻe hou i ke kai ma hope o ka neʻe ʻana mai ke kai a i ka ʻāina: noho nā kūpuna o nā koholā a me nā iʻa iwi ma ka ʻāina a ma hope wale nō i neʻe i ke kai. No laila ua helu ʻia kēia mau mea i waena o nā mea kai.
No laila ʻaʻole maopopo loa nā holoholona o ke kai no ka mea ʻaʻole pili lākou i ke ʻano o ka evolution. Ua like keia me na holoholona ululaau. Ua hilinaʻi nui hoʻi i ke kai hea. Ma kahi kokoke i ka equator, ʻoi aku ka mahana o ka wai ma mua o ka Arctic a i ʻole Antarctica. ʻO ia ke kumu e noho ai nā holoholona moana ʻē aʻe ma laila.