Alex Mustard / Pair of Bar jacks (Caranx ruber) hunting Silversides (Atherinidae) inside cave. Devil's Grotto, George Town, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Graham Eaton / Shoal of Hardyhead Silverside (Atherinomorus lacunosus) hunted by a shoal of Bluefin Trevally (Caranx melampygus) along a shoreline. Komandoo Island, Maldives, January.

Alex Mustard / Silversides (Atherinomorus lacunosus) school just below surface in evening light, Berenice Jetty, Aqaba, Jordan. Gulf of Aqaba, Jordan.

Alex Mustard / Soft corals (Dendronephthya hemprichi) growing in very shallow water in the shade provided by a jetty, while a school of Silversides (Atherinomorus lacunosus) circle. Berenice Jetty, Aqaba, Jordan. Gu...

Tony Wu / Hardyhead silversides (Atherinomorus lacunosus) huge shoal swarming under the jetty at Samarai Island in Milne Bay, Papua New Guinea.

Tony Wu / Hardyhead silversides (Atherinomorus lacunosus) swarming around the coral-encrusted remains of a portion of the jetty at Samarai Island in Milne Bay, Papua New Guinea

Tony Wu / Hardyhead silversides (Atherinomorus lacunosus) swarming under the jetty at Samarai Island in Milne Bay, Papua New Guinea.

Alex Mustard / School of Silversides (Atherinomorus lacunosus) mass below a jetty, creating a false ceiling of fish. Berenice Jetty, Aqaba, Jordan. Gulf of Aqaba, Jordan.

Alex Mustard / Lionfish (Pterois volitans) chasing a school of Hardyhead silverside (Atherinomorus lacunosus) beneath Berenice Jetty, Gulf of Aqaba, Jordan.

Shane Gross / Red mangrove (Rhizophora mangle) habitat with shoal of Silversides (Atherinomorus lacunosus), Eleuthera, Bahamas.

Shane Gross / Red mangrove (Rhizophora mangle) habitat with shoal of Silversides (Atherinomorus lacunosus), Eleuthera, Bahamas.

Shane Gross / Grey snapper fish (Lutjanus griseus) hunting Silversides (Atherinomorus lacunosus) among red mangrove (Rhizophora mangle) roots, Eleuthera, Bahamas.